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declare
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return
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require
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require_once
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include_once
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函数
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返回值
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可变函数
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匿名函数
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类与对象
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类常量
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类的自动加载
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构造函数和析构函数
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对象继承
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范围解析操作符
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Static 关键字
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抽象类
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对象接口
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Trait
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匿名类
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遍历对象
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魔术方法
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Final 关键字
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对象复制
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对象比较
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<a href="../../.." >文件系统</a>
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<h1 id="文件系统">文件系统</h1>
<ul>
<li><a href="#basename">basename - 返回路径中的文件名部分</a></li>
<li><a href="#chgrp">chgrp - 改变文件所属的组</a></li>
<li><a href="#chmod">chmod - 改变文件模式</a></li>
<li><a href="#chown">chown - 改变文件的所有者</a></li>
<li><a href="#clearstatcache">clearstatcache - 清除文件状态缓存</a></li>
<li><a href="#copy">copy - 拷贝文件</a></li>
<li><a href="#dirname">dirname - 返回路径中的目录部分</a></li>
<li><a href="#diskfreespace">disk_free_space - 返回目录中的可用空间</a></li>
<li><a href="#disktotalspace">disk_total_space - 返回一个目录的磁盘总大小</a></li>
<li><a href="#diskfreespace">diskfreespace - 返回目录中的可用空间</a></li>
<li><a href="#fclose">fclose - 关闭一个已打开的文件指针</a></li>
<li><a href="#feof">feof - 测试文件指针是否到了文件结束的位置</a></li>
<li><a href="#fflush">fflush - 将缓冲内容输出到文件</a></li>
<li><a href="#fgetc">fgetc - 从文件指针中读取字符</a></li>
<li><a href="#fgetcsv">fgetcsv - 从文件指针中读入一行并解析 CSV 字段</a></li>
<li><a href="#fgets">fgets - 从文件指针中读取一行</a></li>
<li><a href="#fileexists">file_exists - 检查文件或目录是否存在</a></li>
<li><a href="#filegetcontents">file_get_contents - 将整个文件读入一个字符串</a></li>
<li><a href="#fileputcontents">file_put_contents - 将一个字符串写入文件</a></li>
<li><a href="#file">file - 把整个文件读入一个数组中</a></li>
<li><a href="#fileatime">fileatime - 取得文件的上次访问时间</a></li>
<li><a href="#filectime">filectime - 取得文件的 inode 修改时间</a></li>
<li><a href="#filegroup">filegroup - 取得文件的组</a></li>
<li><a href="#fileinode">fileinode - 取得文件的 inode</a></li>
<li><a href="#filemtime">filemtime - 取得文件修改时间</a></li>
<li><a href="#fileowner">fileowner - 取得文件的所有者</a></li>
<li><a href="#fileperms">fileperms - 取得文件的权限</a></li>
<li><a href="#filesize">filesize - 取得文件大小</a></li>
<li><a href="#filetype">filetype - 取得文件类型</a></li>
<li><a href="#flock">flock - 轻便的咨询文件锁定</a></li>
<li><a href="#fnmatch">fnmatch - 用模式匹配文件名</a></li>
<li><a href="#fopen">fopen - 打开文件或者 URL</a></li>
<li><a href="#fpassthru">fpassthru - 输出文件指针处的所有剩余数据</a></li>
<li><a href="#fputcsv">fputcsv - 将行格式化为 CSV 并写入文件指针</a></li>
<li><a href="#fputs">fputs - 写入文件（可安全用于二进制文件）</a></li>
<li><a href="#fread">fread - 读取文件（可安全用于二进制文件）</a></li>
<li><a href="#fscanf">fscanf - 从文件中格式化输入</a></li>
<li><a href="#fseek">fseek - 在文件指针中定位</a></li>
<li><a href="#fstat">fstat - 通过已打开的文件指针取得文件信息</a></li>
<li><a href="#ftell">ftell - 返回文件指针读 / 写的位置</a></li>
<li><a href="#ftruncate">ftruncate - 将文件截断到给定的长度</a></li>
<li><a href="#fwrite">fwrite - 写入文件（可安全用于二进制文件）</a></li>
<li><a href="#glob">glob - 寻找与模式匹配的文件路径</a></li>
<li><a href="#isdir">is_dir - 判断给定文件名是否是一个目录</a></li>
<li><a href="#isexecutable">is_executable - 判断给定文件名是否可执行</a></li>
<li><a href="#isfile">is_file - 判断给定文件名是否为一个正常的文件</a></li>
<li><a href="#islink">is_link - 判断给定文件名是否为一个符号连接</a></li>
<li><a href="#isreadable">is_readable - 判断给定文件名是否可读</a></li>
<li><a href="#isuploadedfile">is_uploaded_file - 判断文件是否是通过 HTTP POST 上传的</a></li>
<li><a href="#iswritable">is_writable - 判断给定的文件名是否可写</a></li>
<li><a href="#iswriteable">is_writeable - 判断给定的文件名是否可写</a></li>
<li><a href="#lchgrp">lchgrp - 修改符号链接的所有组</a></li>
<li><a href="#lchown">lchown - 修改符号链接的所有者</a></li>
<li><a href="#link">link - 建立一个硬连接</a></li>
<li><a href="#linkinfo">linkinfo - 获取一个连接的信息</a></li>
<li><a href="#lstat">lstat - 给出一个文件或符号连接的信息</a></li>
<li><a href="#mkdir">mkdir - 新建目录</a></li>
<li><a href="#moveuploadedfile">move_uploaded_file - 将上传的文件移动到新位置</a></li>
<li><a href="#parseinifile">parse_ini_file - 解析一个配置文件</a></li>
<li><a href="#parseinistring">parse_ini_string - 解析配置字符串</a></li>
<li><a href="#pathinfo">pathinfo - 返回文件路径的信息</a></li>
<li><a href="#pclose">pclose - 关闭进程文件指针</a></li>
<li><a href="#popen">popen - 打开进程文件指针</a></li>
<li><a href="#readfile">readfile - 输出文件</a></li>
<li><a href="#readlink">readlink - 返回符号连接指向的目标</a></li>
<li><a href="#realpathcacheget">realpath_cache_get - 获取真实目录缓存的详情</a></li>
<li><a href="#realpathcachesize">realpath_cache_size - 获取真实路径缓冲区的大小</a></li>
<li><a href="#realpath">realpath - 返回规范化的绝对路径名</a></li>
<li><a href="#rename">rename - 重命名一个文件或目录</a></li>
<li><a href="#rewind">rewind - 倒回文件指针的位置</a></li>
<li><a href="#rmdir">rmdir - 删除目录</a></li>
<li><a href="#setfilebuffer">set_file_buffer - 设置给定流上的写文件缓冲</a></li>
<li><a href="#stat">stat - 给出文件的信息</a></li>
<li><a href="#symlink">symlink - 建立符号连接</a></li>
<li><a href="#tempnam">tempnam - 建立一个具有唯一文件名的文件</a></li>
<li><a href="#tmpfile">tmpfile - 建立一个临时文件</a></li>
<li><a href="#touch">touch - 设定文件的访问和修改时间</a></li>
<li><a href="#umask">umask - 改变当前的 umask</a></li>
<li><a href="#unlink">unlink - 删除文件</a></li>
</ul>
<h2 id="basename">basename</h2>
<pre class="language-"><code class="lang-php"><span class="token delimiter important"><?php</span>
<span class="token function">var_dump</span><span class="token punctuation">(</span><span class="token function">basename</span><span class="token punctuation">(</span><span class="token single-quoted-string string">'foo/bar'</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span> <span class="token comment">// string(3) "bar"</span>
<span class="token function">var_dump</span><span class="token punctuation">(</span><span class="token function">basename</span><span class="token punctuation">(</span><span class="token single-quoted-string string">'/foo/bar/'</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span> <span class="token comment">// string(3) "bar"</span>
<span class="token function">var_dump</span><span class="token punctuation">(</span><span class="token function">basename</span><span class="token punctuation">(</span><span class="token single-quoted-string string">'/foo/bar.txt'</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span> <span class="token comment">// string(7) "bar.txt"</span>
<span class="token function">var_dump</span><span class="token punctuation">(</span><span class="token function">basename</span><span class="token punctuation">(</span><span class="token single-quoted-string string">'/foo/bar/baz.txt'</span><span class="token punctuation">,</span> <span class="token single-quoted-string string">'.txt'</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span> <span class="token comment">// string(3) "baz"</span>
<span class="token function">var_dump</span><span class="token punctuation">(</span><span class="token function">basename</span><span class="token punctuation">(</span><span class="token single-quoted-string string">'/foo/'</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span> <span class="token comment">// string(3) "foo"</span>
<span class="token function">var_dump</span><span class="token punctuation">(</span><span class="token function">basename</span><span class="token punctuation">(</span><span class="token single-quoted-string string">'/'</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span> <span class="token comment">// string(0) ""</span>
<span class="token function">var_dump</span><span class="token punctuation">(</span><span class="token function">basename</span><span class="token punctuation">(</span><span class="token single-quoted-string string">'.'</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span> <span class="token comment">// string(1) "."</span>
</code></pre>
<h2 id="chgrp">chgrp</h2>
<pre class="language-"><code class="lang-php"><span class="token delimiter important"><?php</span>
<span class="token function">var_dump</span><span class="token punctuation">(</span><span class="token function">chgrp</span><span class="token punctuation">(</span><span class="token constant">__FILE__</span><span class="token punctuation">,</span> <span class="token number">0</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
</code></pre>
<h2 id="chmod">chmod</h2>
<pre class="language-"><code class="lang-php"><span class="token delimiter important"><?php</span>
<span class="token function">var_dump</span><span class="token punctuation">(</span><span class="token function">chmod</span><span class="token punctuation">(</span><span class="token constant">__FILE__</span><span class="token punctuation">,</span> <span class="token number">0000</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
<span class="token function">var_dump</span><span class="token punctuation">(</span><span class="token function">chmod</span><span class="token punctuation">(</span><span class="token constant">__FILE__</span><span class="token punctuation">,</span> <span class="token number">0421</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
<span class="token function">var_dump</span><span class="token punctuation">(</span><span class="token function">chmod</span><span class="token punctuation">(</span><span class="token constant">__FILE__</span><span class="token punctuation">,</span> <span class="token number">0655</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
<span class="token function">var_dump</span><span class="token punctuation">(</span><span class="token function">chmod</span><span class="token punctuation">(</span><span class="token constant">__FILE__</span><span class="token punctuation">,</span> <span class="token number">0777</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
</code></pre>
<h2 id="chown">chown</h2>
<pre class="language-"><code class="lang-php"><span class="token delimiter important"><?php</span>
<span class="token function">var_dump</span><span class="token punctuation">(</span><span class="token function">chown</span><span class="token punctuation">(</span><span class="token constant">__FILE__</span><span class="token punctuation">,</span> <span class="token number">0</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
</code></pre>
<h2 id="clearstatcache">clearstatcache</h2>
<pre class="language-"><code class="lang-php"><span class="token delimiter important"><?php</span>
<span class="token function">clearstatcache</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
<span class="token function">clearstatcache</span><span class="token punctuation">(</span><span class="token boolean constant">true</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
<span class="token function">clearstatcache</span><span class="token punctuation">(</span><span class="token boolean constant">true</span><span class="token punctuation">,</span> <span class="token constant">__FILE__</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
</code></pre>
<h2 id="copy">copy</h2>
<pre class="language-"><code class="lang-php"><span class="token delimiter important"><?php</span>
<span class="token function">var_dump</span><span class="token punctuation">(</span><span class="token function">copy</span><span class="token punctuation">(</span><span class="token constant">__DIR__</span> <span class="token punctuation">.</span> <span class="token single-quoted-string string">'/foo.txt'</span><span class="token punctuation">,</span> <span class="token constant">__DIR__</span> <span class="token punctuation">.</span> <span class="token single-quoted-string string">'/bar.txt'</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
</code></pre>
<h2 id="dirname">dirname</h2>
<pre class="language-"><code class="lang-php"><span class="token delimiter important"><?php</span>
<span class="token function">var_dump</span><span class="token punctuation">(</span><span class="token function">dirname</span><span class="token punctuation">(</span><span class="token single-quoted-string string">'foo/bar'</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span> <span class="token comment">// string(3) "foo"</span>
<span class="token function">var_dump</span><span class="token punctuation">(</span><span class="token function">dirname</span><span class="token punctuation">(</span><span class="token single-quoted-string string">'/foo/bar/'</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span> <span class="token comment">// string(4) "/foo"</span>
<span class="token function">var_dump</span><span class="token punctuation">(</span><span class="token function">dirname</span><span class="token punctuation">(</span><span class="token single-quoted-string string">'/foo/bar.txt'</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span> <span class="token comment">// string(4) "/foo"</span>
<span class="token function">var_dump</span><span class="token punctuation">(</span><span class="token function">dirname</span><span class="token punctuation">(</span><span class="token single-quoted-string string">'/foo/bar/baz.txt'</span><span class="token punctuation">,</span> <span class="token number">2</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span> <span class="token comment">// string(4) "/foo"</span>
<span class="token function">var_dump</span><span class="token punctuation">(</span><span class="token function">dirname</span><span class="token punctuation">(</span><span class="token single-quoted-string string">'/foo/'</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span> <span class="token comment">// string(1) "\"</span>
<span class="token function">var_dump</span><span class="token punctuation">(</span><span class="token function">dirname</span><span class="token punctuation">(</span><span class="token single-quoted-string string">'/'</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span> <span class="token comment">// string(1) "\"</span>
<span class="token function">var_dump</span><span class="token punctuation">(</span><span class="token function">dirname</span><span class="token punctuation">(</span><span class="token single-quoted-string string">'.'</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span> <span class="token comment">// string(1) "."</span>
</code></pre>
<h2 id="diskfreespace">disk_free_space</h2>
<pre class="language-"><code class="lang-php"><span class="token delimiter important"><?php</span>
<span class="token function">var_dump</span><span class="token punctuation">(</span><span class="token function">disk_free_space</span><span class="token punctuation">(</span><span class="token single-quoted-string string">'/'</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
<span class="token function">var_dump</span><span class="token punctuation">(</span><span class="token function">disk_free_space</span><span class="token punctuation">(</span><span class="token single-quoted-string string">'C:'</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
</code></pre>
<h2 id="disktotalspace">disk_total_space</h2>
<pre class="language-"><code class="lang-php"><span class="token delimiter important"><?php</span>
<span class="token function">var_dump</span><span class="token punctuation">(</span><span class="token function">disk_total_space</span><span class="token punctuation">(</span><span class="token single-quoted-string string">'/'</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
<span class="token function">var_dump</span><span class="token punctuation">(</span><span class="token function">disk_total_space</span><span class="token punctuation">(</span><span class="token single-quoted-string string">'C:'</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
</code></pre>
<h2 id="diskfreespace">diskfreespace</h2>
<pre class="language-"><code class="lang-php"><span class="token delimiter important"><?php</span>
<span class="token function">var_dump</span><span class="token punctuation">(</span><span class="token function">diskfreespace</span><span class="token punctuation">(</span><span class="token single-quoted-string string">'/'</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
<span class="token function">var_dump</span><span class="token punctuation">(</span><span class="token function">diskfreespace</span><span class="token punctuation">(</span><span class="token single-quoted-string string">'C:'</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
</code></pre>
<h2 id="fclose">fclose</h2>
<pre class="language-"><code class="lang-php"><span class="token delimiter important"><?php</span>
<span class="token variable">$handle</span> <span class="token operator">=</span> <span class="token function">fopen</span><span class="token punctuation">(</span><span class="token constant">__DIR__</span> <span class="token punctuation">.</span> <span class="token single-quoted-string string">'/example.txt'</span><span class="token punctuation">,</span> <span class="token single-quoted-string string">'r'</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
<span class="token function">var_dump</span><span class="token punctuation">(</span><span class="token function">fclose</span><span class="token punctuation">(</span><span class="token variable">$handle</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span> <span class="token comment">// bool(true)</span>
</code></pre>
<h2 id="feof">feof</h2>
<pre class="language-"><code class="lang-php"><span class="token delimiter important"><?php</span>
<span class="token variable">$handle</span> <span class="token operator">=</span> <span class="token function">fopen</span><span class="token punctuation">(</span><span class="token constant">__DIR__</span> <span class="token punctuation">.</span> <span class="token single-quoted-string string">'/example.txt'</span><span class="token punctuation">,</span> <span class="token single-quoted-string string">'r'</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
<span class="token function">var_dump</span><span class="token punctuation">(</span><span class="token function">feof</span><span class="token punctuation">(</span><span class="token variable">$handle</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span> <span class="token comment">// bool(false)</span>
<span class="token keyword">while</span> <span class="token punctuation">(</span><span class="token function">fgets</span><span class="token punctuation">(</span><span class="token variable">$handle</span><span class="token punctuation">)</span> <span class="token operator">!==</span> <span class="token boolean constant">false</span><span class="token punctuation">)</span> <span class="token punctuation">{</span>
<span class="token punctuation">}</span>
<span class="token function">var_dump</span><span class="token punctuation">(</span><span class="token function">feof</span><span class="token punctuation">(</span><span class="token variable">$handle</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span> <span class="token comment">// bool(true)</span>
</code></pre>
<h2 id="fflush">fflush</h2>
<pre class="language-"><code class="lang-php"><span class="token delimiter important"><?php</span>
<span class="token variable">$handle</span> <span class="token operator">=</span> <span class="token function">fopen</span><span class="token punctuation">(</span><span class="token constant">__DIR__</span> <span class="token punctuation">.</span> <span class="token single-quoted-string string">'/example.txt'</span><span class="token punctuation">,</span> <span class="token single-quoted-string string">'w'</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
<span class="token function">fwrite</span><span class="token punctuation">(</span><span class="token variable">$handle</span><span class="token punctuation">,</span> <span class="token single-quoted-string string">'foo'</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
<span class="token function">var_dump</span><span class="token punctuation">(</span><span class="token function">fflush</span><span class="token punctuation">(</span><span class="token variable">$handle</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span> <span class="token comment">// bool(true)</span>
</code></pre>
<h2 id="fgetc">fgetc</h2>
<pre class="language-"><code class="lang-php"><span class="token delimiter important"><?php</span>
<span class="token variable">$handle</span> <span class="token operator">=</span> <span class="token function">fopen</span><span class="token punctuation">(</span><span class="token constant">__DIR__</span> <span class="token punctuation">.</span> <span class="token single-quoted-string string">'/example.txt'</span><span class="token punctuation">,</span> <span class="token single-quoted-string string">'r'</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
<span class="token keyword">while</span> <span class="token punctuation">(</span><span class="token punctuation">(</span><span class="token variable">$character</span> <span class="token operator">=</span> <span class="token function">fgetc</span><span class="token punctuation">(</span><span class="token variable">$handle</span><span class="token punctuation">)</span><span class="token punctuation">)</span> <span class="token operator">!==</span> <span class="token boolean constant">false</span><span class="token punctuation">)</span> <span class="token punctuation">{</span>
<span class="token function">var_dump</span><span class="token punctuation">(</span><span class="token variable">$character</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
<span class="token punctuation">}</span>
<span class="token comment">// string(1) "0"</span>
<span class="token comment">// string(1) "0"</span>
<span class="token comment">// string(1) "0"</span>
</code></pre>
<p>上例中的 <code>example.txt</code> 文件内容：</p>
<pre class="language-"><code>000
</code></pre><h2 id="fgetcsv">fgetcsv</h2>
<pre class="language-"><code class="lang-php"><span class="token delimiter important"><?php</span>
<span class="token variable">$handle</span> <span class="token operator">=</span> <span class="token function">fopen</span><span class="token punctuation">(</span><span class="token constant">__DIR__</span> <span class="token punctuation">.</span> <span class="token single-quoted-string string">'/example.csv'</span><span class="token punctuation">,</span> <span class="token single-quoted-string string">'r'</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
<span class="token keyword">while</span> <span class="token punctuation">(</span><span class="token punctuation">(</span><span class="token variable">$data</span> <span class="token operator">=</span> <span class="token function">fgetcsv</span><span class="token punctuation">(</span><span class="token variable">$handle</span><span class="token punctuation">)</span><span class="token punctuation">)</span> <span class="token operator">!==</span> <span class="token boolean constant">false</span><span class="token punctuation">)</span> <span class="token punctuation">{</span>
<span class="token function">var_dump</span><span class="token punctuation">(</span><span class="token variable">$data</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
<span class="token punctuation">}</span>
<span class="token comment">// array(2) { [0]=> string(3) "foo" [1]=> string(3) "bar" }</span>
<span class="token comment">// array(2) { [0]=> string(3) "baz" [1]=> string(3) "qux" }</span>
<span class="token function">rewind</span><span class="token punctuation">(</span><span class="token variable">$handle</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
<span class="token keyword">while</span> <span class="token punctuation">(</span><span class="token punctuation">(</span><span class="token variable">$data</span> <span class="token operator">=</span> <span class="token function">fgetcsv</span><span class="token punctuation">(</span><span class="token variable">$handle</span><span class="token punctuation">,</span> <span class="token number">1024</span><span class="token punctuation">,</span> <span class="token single-quoted-string string">','</span><span class="token punctuation">)</span><span class="token punctuation">)</span> <span class="token operator">!==</span> <span class="token boolean constant">false</span><span class="token punctuation">)</span> <span class="token punctuation">{</span>
<span class="token function">var_dump</span><span class="token punctuation">(</span><span class="token variable">$data</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
<span class="token punctuation">}</span>
<span class="token comment">// array(2) { [0]=> string(3) "foo" [1]=> string(3) "bar" }</span>
<span class="token comment">// array(2) { [0]=> string(3) "baz" [1]=> string(3) "qux" }</span>
</code></pre>
<p>上例中的 <code>example.csv</code> 文件内容：</p>
<pre class="language-"><code>foo,bar
baz,qux
</code></pre><h2 id="fgets">fgets</h2>
<pre class="language-"><code class="lang-php"><span class="token delimiter important"><?php</span>
<span class="token variable">$handle</span> <span class="token operator">=</span> <span class="token function">fopen</span><span class="token punctuation">(</span><span class="token constant">__DIR__</span> <span class="token punctuation">.</span> <span class="token single-quoted-string string">'/example.txt'</span><span class="token punctuation">,</span> <span class="token single-quoted-string string">'r'</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
<span class="token keyword">while</span> <span class="token punctuation">(</span><span class="token punctuation">(</span><span class="token variable">$data</span> <span class="token operator">=</span> <span class="token function">fgets</span><span class="token punctuation">(</span><span class="token variable">$handle</span><span class="token punctuation">)</span><span class="token punctuation">)</span> <span class="token operator">!==</span> <span class="token boolean constant">false</span><span class="token punctuation">)</span> <span class="token punctuation">{</span>
<span class="token function">var_dump</span><span class="token punctuation">(</span><span class="token function">trim</span><span class="token punctuation">(</span><span class="token variable">$data</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
<span class="token punctuation">}</span>
<span class="token comment">// string(3) "foo"</span>
<span class="token comment">// string(3) "bar"</span>
<span class="token function">rewind</span><span class="token punctuation">(</span><span class="token variable">$handle</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
<span class="token keyword">while</span> <span class="token punctuation">(</span><span class="token punctuation">(</span><span class="token variable">$data</span> <span class="token operator">=</span> <span class="token function">fgets</span><span class="token punctuation">(</span><span class="token variable">$handle</span><span class="token punctuation">,</span> <span class="token number">1024</span><span class="token punctuation">)</span><span class="token punctuation">)</span> <span class="token operator">!==</span> <span class="token boolean constant">false</span><span class="token punctuation">)</span> <span class="token punctuation">{</span>
<span class="token function">var_dump</span><span class="token punctuation">(</span><span class="token function">trim</span><span class="token punctuation">(</span><span class="token variable">$data</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
<span class="token punctuation">}</span>
<span class="token comment">// string(3) "foo"</span>
<span class="token comment">// string(3) "bar"</span>
</code></pre>
<p>上例中的 <code>example.txt</code> 文件内容：</p>
<pre class="language-"><code>foo
bar
</code></pre><h2 id="fileexists">file_exists</h2>
<pre class="language-"><code class="lang-php"><span class="token delimiter important"><?php</span>
<span class="token function">var_dump</span><span class="token punctuation">(</span><span class="token function">file_exists</span><span class="token punctuation">(</span><span class="token constant">__DIR__</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
<span class="token function">var_dump</span><span class="token punctuation">(</span><span class="token function">file_exists</span><span class="token punctuation">(</span><span class="token constant">__DIR__</span> <span class="token punctuation">.</span> <span class="token single-quoted-string string">'/example.txt'</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
</code></pre>
<h2 id="filegetcontents">file_get_contents</h2>
<pre class="language-"><code class="lang-php"><span class="token delimiter important"><?php</span>
<span class="token function">var_dump</span><span class="token punctuation">(</span><span class="token function">file_get_contents</span><span class="token punctuation">(</span><span class="token single-quoted-string string">'https://github.com/'</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
<span class="token function">var_dump</span><span class="token punctuation">(</span><span class="token function">file_get_contents</span><span class="token punctuation">(</span><span class="token constant">__DIR__</span> <span class="token punctuation">.</span> <span class="token single-quoted-string string">'/example.txt'</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
<span class="token function">var_dump</span><span class="token punctuation">(</span><span class="token function">file_get_contents</span><span class="token punctuation">(</span><span class="token constant">__DIR__</span> <span class="token punctuation">.</span> <span class="token single-quoted-string string">'/example.txt'</span><span class="token punctuation">,</span> <span class="token boolean constant">true</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
<span class="token function">var_dump</span><span class="token punctuation">(</span><span class="token function">file_get_contents</span><span class="token punctuation">(</span><span class="token constant">__DIR__</span> <span class="token punctuation">.</span> <span class="token single-quoted-string string">'/example.txt'</span><span class="token punctuation">,</span> <span class="token boolean constant">true</span><span class="token punctuation">,</span> <span class="token constant">null</span><span class="token punctuation">,</span> <span class="token number">1</span><span class="token punctuation">,</span> <span class="token number">2</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
</code></pre>
<h2 id="fileputcontents">file_put_contents</h2>
<pre class="language-"><code class="lang-php"><span class="token delimiter important"><?php</span>
<span class="token function">var_dump</span><span class="token punctuation">(</span><span class="token function">file_put_contents</span><span class="token punctuation">(</span><span class="token constant">__DIR__</span> <span class="token punctuation">.</span> <span class="token single-quoted-string string">'/example.txt'</span><span class="token punctuation">,</span> <span class="token single-quoted-string string">'Hello World!'</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
<span class="token function">var_dump</span><span class="token punctuation">(</span><span class="token function">file_put_contents</span><span class="token punctuation">(</span><span class="token constant">__DIR__</span> <span class="token punctuation">.</span> <span class="token single-quoted-string string">'/example.txt'</span><span class="token punctuation">,</span> <span class="token single-quoted-string string">'Hello World!'</span><span class="token punctuation">,</span> <span class="token constant">FILE_USE_INCLUDE_PATH</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
<span class="token function">var_dump</span><span class="token punctuation">(</span><span class="token function">file_put_contents</span><span class="token punctuation">(</span><span class="token constant">__DIR__</span> <span class="token punctuation">.</span> <span class="token single-quoted-string string">'/example.txt'</span><span class="token punctuation">,</span> <span class="token single-quoted-string string">'Hello World!'</span><span class="token punctuation">,</span> <span class="token constant">FILE_APPEND</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
<span class="token function">var_dump</span><span class="token punctuation">(</span><span class="token function">file_put_contents</span><span class="token punctuation">(</span><span class="token constant">__DIR__</span> <span class="token punctuation">.</span> <span class="token single-quoted-string string">'/example.txt'</span><span class="token punctuation">,</span> <span class="token single-quoted-string string">'Hello World!'</span><span class="token punctuation">,</span> <span class="token constant">LOCK_EX</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
</code></pre>
<h2 id="file">file</h2>
<pre class="language-"><code class="lang-php"><span class="token delimiter important"><?php</span>
<span class="token function">var_dump</span><span class="token punctuation">(</span><span class="token function">file</span><span class="token punctuation">(</span><span class="token constant">__DIR__</span> <span class="token punctuation">.</span> <span class="token single-quoted-string string">'/example.txt'</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span> <span class="token comment">// array(4) { [0]=> string(5) "foo " [1]=> string(5) "bar " [2]=> string(5) "baz " [3]=> string(3) "qux" }</span>
<span class="token function">var_dump</span><span class="token punctuation">(</span><span class="token function">file</span><span class="token punctuation">(</span><span class="token constant">__DIR__</span> <span class="token punctuation">.</span> <span class="token single-quoted-string string">'/example.txt'</span><span class="token punctuation">,</span> <span class="token constant">FILE_USE_INCLUDE_PATH</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span> <span class="token comment">// array(4) { [0]=> string(5) "foo " [1]=> string(5) "bar " [2]=> string(5) "baz " [3]=> string(3) "qux" }</span>
<span class="token function">var_dump</span><span class="token punctuation">(</span><span class="token function">file</span><span class="token punctuation">(</span><span class="token constant">__DIR__</span> <span class="token punctuation">.</span> <span class="token single-quoted-string string">'/example.txt'</span><span class="token punctuation">,</span> <span class="token constant">FILE_IGNORE_NEW_LINES</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span> <span class="token comment">// array(4) { [0]=> string(3) "foo" [1]=> string(3) "bar" [2]=> string(3) "baz" [3]=> string(3) "qux" }</span>
<span class="token function">var_dump</span><span class="token punctuation">(</span><span class="token function">file</span><span class="token punctuation">(</span><span class="token constant">__DIR__</span> <span class="token punctuation">.</span> <span class="token single-quoted-string string">'/example.txt'</span><span class="token punctuation">,</span> <span class="token constant">FILE_SKIP_EMPTY_LINES</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span> <span class="token comment">// array(4) { [0]=> string(5) "foo " [1]=> string(5) "bar " [2]=> string(5) "baz " [3]=> string(3) "qux" }</span>
</code></pre>
<p>上例中的 <code>example.txt</code> 文件内容：</p>
<pre class="language-"><code>foo
bar
baz
qux
</code></pre><h2 id="fileatime">fileatime</h2>
<pre class="language-"><code class="lang-php"><span class="token delimiter important"><?php</span>
<span class="token function">var_dump</span><span class="token punctuation">(</span><span class="token function">fileatime</span><span class="token punctuation">(</span><span class="token constant">__DIR__</span> <span class="token punctuation">.</span> <span class="token single-quoted-string string">'/example.txt'</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
</code></pre>
<h2 id="filectime">filectime</h2>
<pre class="language-"><code class="lang-php"><span class="token delimiter important"><?php</span>
<span class="token function">var_dump</span><span class="token punctuation">(</span><span class="token function">filectime</span><span class="token punctuation">(</span><span class="token constant">__DIR__</span> <span class="token punctuation">.</span> <span class="token single-quoted-string string">'/example.txt'</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
</code></pre>
<h2 id="filegroup">filegroup</h2>
<pre class="language-"><code class="lang-php"><span class="token delimiter important"><?php</span>
<span class="token function">var_dump</span><span class="token punctuation">(</span><span class="token function">filegroup</span><span class="token punctuation">(</span><span class="token constant">__DIR__</span> <span class="token punctuation">.</span> <span class="token single-quoted-string string">'/example.txt'</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
</code></pre>
<h2 id="fileinode">fileinode</h2>
<pre class="language-"><code class="lang-php"><span class="token delimiter important"><?php</span>
<span class="token function">var_dump</span><span class="token punctuation">(</span><span class="token function">fileinode</span><span class="token punctuation">(</span><span class="token constant">__DIR__</span> <span class="token punctuation">.</span> <span class="token single-quoted-string string">'/example.txt'</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
</code></pre>
<h2 id="filemtime">filemtime</h2>
<pre class="language-"><code class="lang-php"><span class="token delimiter important"><?php</span>
<span class="token function">var_dump</span><span class="token punctuation">(</span><span class="token function">filemtime</span><span class="token punctuation">(</span><span class="token constant">__DIR__</span> <span class="token punctuation">.</span> <span class="token single-quoted-string string">'/example.txt'</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
</code></pre>
<h2 id="fileowner">fileowner</h2>
<pre class="language-"><code class="lang-php"><span class="token delimiter important"><?php</span>
<span class="token function">var_dump</span><span class="token punctuation">(</span><span class="token function">fileowner</span><span class="token punctuation">(</span><span class="token constant">__DIR__</span> <span class="token punctuation">.</span> <span class="token single-quoted-string string">'/example.txt'</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
</code></pre>
<h2 id="fileperms">fileperms</h2>
<pre class="language-"><code class="lang-php"><span class="token delimiter important"><?php</span>
<span class="token function">var_dump</span><span class="token punctuation">(</span><span class="token function">fileperms</span><span class="token punctuation">(</span><span class="token constant">__DIR__</span> <span class="token punctuation">.</span> <span class="token single-quoted-string string">'/example.txt'</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
</code></pre>
<h2 id="filesize">filesize</h2>
<pre class="language-"><code class="lang-php"><span class="token delimiter important"><?php</span>
<span class="token function">var_dump</span><span class="token punctuation">(</span><span class="token function">filesize</span><span class="token punctuation">(</span><span class="token constant">__DIR__</span> <span class="token punctuation">.</span> <span class="token single-quoted-string string">'/example.txt'</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
</code></pre>
<h2 id="filetype">filetype</h2>
<pre class="language-"><code class="lang-php"><span class="token delimiter important"><?php</span>
<span class="token function">var_dump</span><span class="token punctuation">(</span><span class="token function">filetype</span><span class="token punctuation">(</span><span class="token constant">__DIR__</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span> <span class="token comment">// string(3) "dir"</span>
<span class="token function">var_dump</span><span class="token punctuation">(</span><span class="token function">filetype</span><span class="token punctuation">(</span><span class="token constant">__DIR__</span> <span class="token punctuation">.</span> <span class="token single-quoted-string string">'/example.txt'</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span> <span class="token comment">// string(4) "file"</span>
</code></pre>
<h2 id="flock">flock</h2>
<pre class="language-"><code class="lang-php"><span class="token delimiter important"><?php</span>
<span class="token variable">$handle</span> <span class="token operator">=</span> <span class="token function">fopen</span><span class="token punctuation">(</span><span class="token constant">__DIR__</span> <span class="token punctuation">.</span> <span class="token single-quoted-string string">'/example.txt'</span><span class="token punctuation">,</span> <span class="token single-quoted-string string">'r'</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
<span class="token function">var_dump</span><span class="token punctuation">(</span><span class="token function">flock</span><span class="token punctuation">(</span><span class="token variable">$handle</span><span class="token punctuation">,</span> <span class="token constant">LOCK_SH</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span> <span class="token comment">// bool(true)</span>
<span class="token function">var_dump</span><span class="token punctuation">(</span><span class="token function">flock</span><span class="token punctuation">(</span><span class="token variable">$handle</span><span class="token punctuation">,</span> <span class="token constant">LOCK_EX</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span> <span class="token comment">// bool(true)</span>
<span class="token function">var_dump</span><span class="token punctuation">(</span><span class="token function">flock</span><span class="token punctuation">(</span><span class="token variable">$handle</span><span class="token punctuation">,</span> <span class="token constant">LOCK_UN</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span> <span class="token comment">// bool(true)</span>
</code></pre>
<h2 id="fnmatch">fnmatch</h2>
<pre class="language-"><code class="lang-php"><span class="token delimiter important"><?php</span>
<span class="token function">var_dump</span><span class="token punctuation">(</span><span class="token function">fnmatch</span><span class="token punctuation">(</span><span class="token single-quoted-string string">'*f[a-z]o'</span><span class="token punctuation">,</span> <span class="token single-quoted-string string">'foo'</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span> <span class="token comment">// bool(true)</span>
</code></pre>
<h2 id="fopen">fopen</h2>
<pre class="language-"><code class="lang-php"><span class="token delimiter important"><?php</span>
<span class="token function">var_dump</span><span class="token punctuation">(</span><span class="token function">fopen</span><span class="token punctuation">(</span><span class="token constant">__DIR__</span> <span class="token punctuation">.</span> <span class="token single-quoted-string string">'/example.txt'</span><span class="token punctuation">,</span> <span class="token single-quoted-string string">'r'</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
<span class="token function">var_dump</span><span class="token punctuation">(</span><span class="token function">fopen</span><span class="token punctuation">(</span><span class="token constant">__DIR__</span> <span class="token punctuation">.</span> <span class="token single-quoted-string string">'/example.txt'</span><span class="token punctuation">,</span> <span class="token single-quoted-string string">'r'</span><span class="token punctuation">,</span> <span class="token boolean constant">true</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
<span class="token function">var_dump</span><span class="token punctuation">(</span><span class="token function">fopen</span><span class="token punctuation">(</span><span class="token constant">__DIR__</span> <span class="token punctuation">.</span> <span class="token single-quoted-string string">'/example.txt'</span><span class="token punctuation">,</span> <span class="token single-quoted-string string">'r+'</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
<span class="token function">var_dump</span><span class="token punctuation">(</span><span class="token function">fopen</span><span class="token punctuation">(</span><span class="token constant">__DIR__</span> <span class="token punctuation">.</span> <span class="token single-quoted-string string">'/example.txt'</span><span class="token punctuation">,</span> <span class="token single-quoted-string string">'w'</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
<span class="token function">var_dump</span><span class="token punctuation">(</span><span class="token function">fopen</span><span class="token punctuation">(</span><span class="token constant">__DIR__</span> <span class="token punctuation">.</span> <span class="token single-quoted-string string">'/example.txt'</span><span class="token punctuation">,</span> <span class="token single-quoted-string string">'w+'</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
<span class="token function">var_dump</span><span class="token punctuation">(</span><span class="token function">fopen</span><span class="token punctuation">(</span><span class="token constant">__DIR__</span> <span class="token punctuation">.</span> <span class="token single-quoted-string string">'/example.txt'</span><span class="token punctuation">,</span> <span class="token single-quoted-string string">'a'</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
<span class="token function">var_dump</span><span class="token punctuation">(</span><span class="token function">fopen</span><span class="token punctuation">(</span><span class="token constant">__DIR__</span> <span class="token punctuation">.</span> <span class="token single-quoted-string string">'/example.txt'</span><span class="token punctuation">,</span> <span class="token single-quoted-string string">'a+'</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
<span class="token function">var_dump</span><span class="token punctuation">(</span><span class="token function">fopen</span><span class="token punctuation">(</span><span class="token constant">__DIR__</span> <span class="token punctuation">.</span> <span class="token single-quoted-string string">'/example.txt'</span><span class="token punctuation">,</span> <span class="token single-quoted-string string">'x'</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
<span class="token function">var_dump</span><span class="token punctuation">(</span><span class="token function">fopen</span><span class="token punctuation">(</span><span class="token constant">__DIR__</span> <span class="token punctuation">.</span> <span class="token single-quoted-string string">'/example.txt'</span><span class="token punctuation">,</span> <span class="token single-quoted-string string">'x+'</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
<span class="token function">var_dump</span><span class="token punctuation">(</span><span class="token function">fopen</span><span class="token punctuation">(</span><span class="token constant">__DIR__</span> <span class="token punctuation">.</span> <span class="token single-quoted-string string">'/example.txt'</span><span class="token punctuation">,</span> <span class="token single-quoted-string string">'c'</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
<span class="token function">var_dump</span><span class="token punctuation">(</span><span class="token function">fopen</span><span class="token punctuation">(</span><span class="token constant">__DIR__</span> <span class="token punctuation">.</span> <span class="token single-quoted-string string">'/example.txt'</span><span class="token punctuation">,</span> <span class="token single-quoted-string string">'c+'</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
</code></pre>
<h2 id="fpassthru">fpassthru</h2>
<pre class="language-"><code class="lang-php"><span class="token delimiter important"><?php</span>
<span class="token variable">$handle</span> <span class="token operator">=</span> <span class="token function">fopen</span><span class="token punctuation">(</span><span class="token constant">__DIR__</span> <span class="token punctuation">.</span> <span class="token single-quoted-string string">'/example.txt'</span><span class="token punctuation">,</span> <span class="token single-quoted-string string">'r'</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
<span class="token function">fpassthru</span><span class="token punctuation">(</span><span class="token variable">$handle</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
<span class="token comment">// foo</span>
<span class="token comment">// bar</span>
<span class="token comment">// baz</span>
<span class="token comment">// qux</span>
</code></pre>
<p>上例中的 <code>example.txt</code> 文件内容：</p>
<pre class="language-"><code>foo
bar
baz
qux
</code></pre><h2 id="fputcsv">fputcsv</h2>
<pre class="language-"><code class="lang-php"><span class="token delimiter important"><?php</span>
<span class="token variable">$data</span> <span class="token operator">=</span> <span class="token punctuation">[</span><span class="token punctuation">[</span><span class="token single-quoted-string string">'foo'</span><span class="token punctuation">,</span> <span class="token single-quoted-string string">'bar'</span><span class="token punctuation">]</span><span class="token punctuation">,</span> <span class="token punctuation">[</span><span class="token single-quoted-string string">'baz'</span><span class="token punctuation">,</span> <span class="token single-quoted-string string">'qux'</span><span class="token punctuation">]</span><span class="token punctuation">]</span><span class="token punctuation">;</span>
<span class="token variable">$handle</span> <span class="token operator">=</span> <span class="token function">fopen</span><span class="token punctuation">(</span><span class="token constant">__DIR__</span> <span class="token punctuation">.</span> <span class="token single-quoted-string string">'/example.csv'</span><span class="token punctuation">,</span> <span class="token single-quoted-string string">'w'</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
<span class="token keyword">foreach</span> <span class="token punctuation">(</span><span class="token variable">$data</span> <span class="token keyword">as</span> <span class="token variable">$value</span><span class="token punctuation">)</span> <span class="token punctuation">{</span>
<span class="token function">fputcsv</span><span class="token punctuation">(</span><span class="token variable">$handle</span><span class="token punctuation">,</span> <span class="token variable">$value</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
<span class="token punctuation">}</span>
</code></pre>
<p>上例中的 <code>example.csv</code> 文件内容：</p>
<pre class="language-"><code>foo,bar
baz,qux
</code></pre><hr>
<pre class="language-"><code class="lang-php"><span class="token delimiter important"><?php</span>
<span class="token variable">$data</span> <span class="token operator">=</span> <span class="token punctuation">[</span><span class="token punctuation">[</span><span class="token single-quoted-string string">'foo'</span><span class="token punctuation">,</span> <span class="token single-quoted-string string">'bar'</span><span class="token punctuation">]</span><span class="token punctuation">,</span> <span class="token punctuation">[</span><span class="token single-quoted-string string">'baz'</span><span class="token punctuation">,</span> <span class="token single-quoted-string string">'qux'</span><span class="token punctuation">]</span><span class="token punctuation">]</span><span class="token punctuation">;</span>
<span class="token variable">$handle</span> <span class="token operator">=</span> <span class="token function">fopen</span><span class="token punctuation">(</span><span class="token constant">__DIR__</span> <span class="token punctuation">.</span> <span class="token single-quoted-string string">'/example.csv'</span><span class="token punctuation">,</span> <span class="token single-quoted-string string">'w'</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
<span class="token keyword">foreach</span> <span class="token punctuation">(</span><span class="token variable">$data</span> <span class="token keyword">as</span> <span class="token variable">$value</span><span class="token punctuation">)</span> <span class="token punctuation">{</span>
<span class="token function">fputcsv</span><span class="token punctuation">(</span><span class="token variable">$handle</span><span class="token punctuation">,</span> <span class="token variable">$value</span><span class="token punctuation">,</span> <span class="token single-quoted-string string">';'</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
<span class="token punctuation">}</span>
</code></pre>
<p>上例中的 <code>example.csv</code> 文件内容：</p>
<pre class="language-"><code>foo;bar
baz;qux
</code></pre><h2 id="fputs">fputs</h2>
<pre class="language-"><code class="lang-php"><span class="token delimiter important"><?php</span>
<span class="token variable">$handle</span> <span class="token operator">=</span> <span class="token function">fopen</span><span class="token punctuation">(</span><span class="token constant">__DIR__</span> <span class="token punctuation">.</span> <span class="token single-quoted-string string">'/example.txt'</span><span class="token punctuation">,</span> <span class="token single-quoted-string string">'w'</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
<span class="token function">var_dump</span><span class="token punctuation">(</span><span class="token function">fputs</span><span class="token punctuation">(</span><span class="token variable">$handle</span><span class="token punctuation">,</span> <span class="token single-quoted-string string">'foo'</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span> <span class="token comment">// int(3)</span>
</code></pre>
<p>上例中的 <code>example.txt</code> 文件内容：</p>
<pre class="language-"><code>foo
</code></pre><hr>
<pre class="language-"><code class="lang-php"><span class="token delimiter important"><?php</span>
<span class="token variable">$handle</span> <span class="token operator">=</span> <span class="token function">fopen</span><span class="token punctuation">(</span><span class="token constant">__DIR__</span> <span class="token punctuation">.</span> <span class="token single-quoted-string string">'/example.txt'</span><span class="token punctuation">,</span> <span class="token single-quoted-string string">'w'</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
<span class="token function">var_dump</span><span class="token punctuation">(</span><span class="token function">fputs</span><span class="token punctuation">(</span><span class="token variable">$handle</span><span class="token punctuation">,</span> <span class="token single-quoted-string string">'foo'</span><span class="token punctuation">,</span> <span class="token number">1</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span> <span class="token comment">// int(1)</span>
</code></pre>
<p>上例中的 <code>example.txt</code> 文件内容：</p>
<pre class="language-"><code>f
</code></pre><h2 id="fread">fread</h2>
<pre class="language-"><code class="lang-php"><span class="token delimiter important"><?php</span>
<span class="token variable">$handle</span> <span class="token operator">=</span> <span class="token function">fopen</span><span class="token punctuation">(</span><span class="token constant">__DIR__</span> <span class="token punctuation">.</span> <span class="token single-quoted-string string">'/example.txt'</span><span class="token punctuation">,</span> <span class="token single-quoted-string string">'r'</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
<span class="token function">var_dump</span><span class="token punctuation">(</span><span class="token function">fread</span><span class="token punctuation">(</span><span class="token variable">$handle</span><span class="token punctuation">,</span> <span class="token function">filesize</span><span class="token punctuation">(</span><span class="token constant">__DIR__</span> <span class="token punctuation">.</span> <span class="token single-quoted-string string">'/example.txt'</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span> <span class="token comment">// string(3) "foo"</span>
<span class="token function">rewind</span><span class="token punctuation">(</span><span class="token variable">$handle</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
<span class="token keyword">while</span> <span class="token punctuation">(</span><span class="token operator">!</span><span class="token function">feof</span><span class="token punctuation">(</span><span class="token variable">$handle</span><span class="token punctuation">)</span><span class="token punctuation">)</span> <span class="token punctuation">{</span>
<span class="token function">var_dump</span><span class="token punctuation">(</span><span class="token function">fread</span><span class="token punctuation">(</span><span class="token variable">$handle</span><span class="token punctuation">,</span> <span class="token number">1</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
<span class="token punctuation">}</span>
<span class="token comment">// string(1) "f"</span>
<span class="token comment">// string(1) "o"</span>
<span class="token comment">// string(1) "o"</span>
<span class="token comment">// string(0) ""</span>
</code></pre>
<h2 id="fscanf">fscanf</h2>
<pre class="language-"><code class="lang-php"><span class="token delimiter important"><?php</span>
<span class="token variable">$handle</span> <span class="token operator">=</span> <span class="token function">fopen</span><span class="token punctuation">(</span><span class="token constant">__DIR__</span> <span class="token punctuation">.</span> <span class="token single-quoted-string string">'/example.txt'</span><span class="token punctuation">,</span> <span class="token single-quoted-string string">'r'</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
<span class="token function">var_dump</span><span class="token punctuation">(</span><span class="token function">fscanf</span><span class="token punctuation">(</span><span class="token variable">$handle</span><span class="token punctuation">,</span> <span class="token single-quoted-string string">'foo=%s bar=%s'</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span> <span class="token comment">// array(2) { [0]=> string(3) "foo" [1]=> string(3) "bar" }</span>
</code></pre>
<p>上例中的 <code>example.txt</code> 文件内容：</p>
<pre class="language-"><code>foo=foo bar=bar
</code></pre><h2 id="fseek">fseek</h2>
<pre class="language-"><code class="lang-php"><span class="token delimiter important"><?php</span>
<span class="token variable">$handle</span> <span class="token operator">=</span> <span class="token function">fopen</span><span class="token punctuation">(</span><span class="token constant">__DIR__</span> <span class="token punctuation">.</span> <span class="token single-quoted-string string">'/example.txt'</span><span class="token punctuation">,</span> <span class="token single-quoted-string string">'r'</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
<span class="token function">var_dump</span><span class="token punctuation">(</span><span class="token function">fseek</span><span class="token punctuation">(</span><span class="token variable">$handle</span><span class="token punctuation">,</span> <span class="token number">1</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span> <span class="token comment">// int(0)</span>
<span class="token function">var_dump</span><span class="token punctuation">(</span><span class="token function">fgets</span><span class="token punctuation">(</span><span class="token variable">$handle</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span> <span class="token comment">// string(2) "oo"</span>
<span class="token function">var_dump</span><span class="token punctuation">(</span><span class="token function">fseek</span><span class="token punctuation">(</span><span class="token variable">$handle</span><span class="token punctuation">,</span> <span class="token number">0</span><span class="token punctuation">,</span> <span class="token constant">SEEK_SET</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span> <span class="token comment">// int(0)</span>
<span class="token function">var_dump</span><span class="token punctuation">(</span><span class="token function">fgets</span><span class="token punctuation">(</span><span class="token variable">$handle</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span> <span class="token comment">// string(3) "foo"</span>
<span class="token function">rewind</span><span class="token punctuation">(</span><span class="token variable">$handle</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
<span class="token function">var_dump</span><span class="token punctuation">(</span><span class="token function">fseek</span><span class="token punctuation">(</span><span class="token variable">$handle</span><span class="token punctuation">,</span> <span class="token number">2</span><span class="token punctuation">,</span> <span class="token constant">SEEK_CUR</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span> <span class="token comment">// int(0)</span>
<span class="token function">var_dump</span><span class="token punctuation">(</span><span class="token function">fgets</span><span class="token punctuation">(</span><span class="token variable">$handle</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span> <span class="token comment">// string(1) "o"</span>
<span class="token function">rewind</span><span class="token punctuation">(</span><span class="token variable">$handle</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
<span class="token function">var_dump</span><span class="token punctuation">(</span><span class="token function">fseek</span><span class="token punctuation">(</span><span class="token variable">$handle</span><span class="token punctuation">,</span> <span class="token operator">-</span><span class="token number">1</span><span class="token punctuation">,</span> <span class="token constant">SEEK_END</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span> <span class="token comment">// int(0)</span>
<span class="token function">var_dump</span><span class="token punctuation">(</span><span class="token function">fgets</span><span class="token punctuation">(</span><span class="token variable">$handle</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span> <span class="token comment">// string(1) "o"</span>
</code></pre>
<p>上例中的 <code>example.txt</code> 文件内容：</p>
<pre class="language-"><code>foo
</code></pre><h2 id="fstat">fstat</h2>
<pre class="language-"><code class="lang-php"><span class="token delimiter important"><?php</span>
<span class="token variable">$handle</span> <span class="token operator">=</span> <span class="token function">fopen</span><span class="token punctuation">(</span><span class="token constant">__DIR__</span> <span class="token punctuation">.</span> <span class="token single-quoted-string string">'/example.txt'</span><span class="token punctuation">,</span> <span class="token single-quoted-string string">'r'</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
<span class="token function">var_dump</span><span class="token punctuation">(</span><span class="token function">fstat</span><span class="token punctuation">(</span><span class="token variable">$handle</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
</code></pre>
<h2 id="ftell">ftell</h2>
<pre class="language-"><code class="lang-php"><span class="token delimiter important"><?php</span>
<span class="token variable">$handle</span> <span class="token operator">=</span> <span class="token function">fopen</span><span class="token punctuation">(</span><span class="token constant">__DIR__</span> <span class="token punctuation">.</span> <span class="token single-quoted-string string">'/example.txt'</span><span class="token punctuation">,</span> <span class="token single-quoted-string string">'r'</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
<span class="token function">var_dump</span><span class="token punctuation">(</span><span class="token function">ftell</span><span class="token punctuation">(</span><span class="token variable">$handle</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span> <span class="token comment">// int(0)</span>
<span class="token function">var_dump</span><span class="token punctuation">(</span><span class="token function">fgets</span><span class="token punctuation">(</span><span class="token variable">$handle</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span> <span class="token comment">// string(3) "foo"</span>
<span class="token function">var_dump</span><span class="token punctuation">(</span><span class="token function">ftell</span><span class="token punctuation">(</span><span class="token variable">$handle</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span> <span class="token comment">// int(3)</span>
</code></pre>
<p>上例中的 <code>example.txt</code> 文件内容：</p>
<pre class="language-"><code>foo
</code></pre><h2 id="ftruncate">ftruncate</h2>
<pre class="language-"><code class="lang-php"><span class="token delimiter important"><?php</span>
<span class="token variable">$handle</span> <span class="token operator">=</span> <span class="token function">fopen</span><span class="token punctuation">(</span><span class="token constant">__DIR__</span> <span class="token punctuation">.</span> <span class="token single-quoted-string string">'/example.txt'</span><span class="token punctuation">,</span> <span class="token single-quoted-string string">'r+'</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
<span class="token function">var_dump</span><span class="token punctuation">(</span><span class="token function">ftruncate</span><span class="token punctuation">(</span><span class="token variable">$handle</span><span class="token punctuation">,</span> <span class="token number">1</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span> <span class="token comment">// bool(true)</span>
</code></pre>
<p>上例中的 <code>example.txt</code> 文件内容：</p>
<pre class="language-"><code>foo
</code></pre><h2 id="fwrite">fwrite</h2>
<pre class="language-"><code class="lang-php"><span class="token delimiter important"><?php</span>
<span class="token variable">$handle</span> <span class="token operator">=</span> <span class="token function">fopen</span><span class="token punctuation">(</span><span class="token constant">__DIR__</span> <span class="token punctuation">.</span> <span class="token single-quoted-string string">'/example.txt'</span><span class="token punctuation">,</span> <span class="token single-quoted-string string">'w'</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
<span class="token function">var_dump</span><span class="token punctuation">(</span><span class="token function">fwrite</span><span class="token punctuation">(</span><span class="token variable">$handle</span><span class="token punctuation">,</span> <span class="token single-quoted-string string">'foo'</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span> <span class="token comment">// int(3)</span>
</code></pre>
<p>上例中的 <code>example.txt</code> 文件内容：</p>
<pre class="language-"><code>foo
</code></pre><hr>
<pre class="language-"><code class="lang-php"><span class="token delimiter important"><?php</span>
<span class="token variable">$handle</span> <span class="token operator">=</span> <span class="token function">fopen</span><span class="token punctuation">(</span><span class="token constant">__DIR__</span> <span class="token punctuation">.</span> <span class="token single-quoted-string string">'/example.txt'</span><span class="token punctuation">,</span> <span class="token single-quoted-string string">'w'</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
<span class="token function">var_dump</span><span class="token punctuation">(</span><span class="token function">fwrite</span><span class="token punctuation">(</span><span class="token variable">$handle</span><span class="token punctuation">,</span> <span class="token single-quoted-string string">'foo'</span><span class="token punctuation">,</span> <span class="token number">1</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span> <span class="token comment">// int(1)</span>
</code></pre>
<p>上例中的 <code>example.txt</code> 文件内容：</p>
<pre class="language-"><code>f
</code></pre><h2 id="glob">glob</h2>
<pre class="language-"><code class="lang-php"><span class="token delimiter important"><?php</span>
<span class="token function">var_dump</span><span class="token punctuation">(</span><span class="token function">glob</span><span class="token punctuation">(</span><span class="token single-quoted-string string">'*.php'</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
<span class="token function">var_dump</span><span class="token punctuation">(</span><span class="token function">glob</span><span class="token punctuation">(</span><span class="token single-quoted-string string">'*.php'</span><span class="token punctuation">,</span> <span class="token constant">GLOB_MARK</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
<span class="token function">var_dump</span><span class="token punctuation">(</span><span class="token function">glob</span><span class="token punctuation">(</span><span class="token single-quoted-string string">'*.php'</span><span class="token punctuation">,</span> <span class="token constant">GLOB_NOSORT</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
<span class="token function">var_dump</span><span class="token punctuation">(</span><span class="token function">glob</span><span class="token punctuation">(</span><span class="token single-quoted-string string">'*.php'</span><span class="token punctuation">,</span> <span class="token constant">GLOB_NOCHECK</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
<span class="token function">var_dump</span><span class="token punctuation">(</span><span class="token function">glob</span><span class="token punctuation">(</span><span class="token single-quoted-string string">'*.php'</span><span class="token punctuation">,</span> <span class="token constant">GLOB_NOESCAPE</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
<span class="token function">var_dump</span><span class="token punctuation">(</span><span class="token function">glob</span><span class="token punctuation">(</span><span class="token single-quoted-string string">'*.php'</span><span class="token punctuation">,</span> <span class="token constant">GLOB_BRACE</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
<span class="token function">var_dump</span><span class="token punctuation">(</span><span class="token function">glob</span><span class="token punctuation">(</span><span class="token single-quoted-string string">'*.php'</span><span class="token punctuation">,</span> <span class="token constant">GLOB_ONLYDIR</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
<span class="token function">var_dump</span><span class="token punctuation">(</span><span class="token function">glob</span><span class="token punctuation">(</span><span class="token single-quoted-string string">'*.php'</span><span class="token punctuation">,</span> <span class="token constant">GLOB_ERR</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
</code></pre>
<h2 id="isdir">is_dir</h2>
<pre class="language-"><code class="lang-php"><span class="token delimiter important"><?php</span>
<span class="token function">var_dump</span><span class="token punctuation">(</span><span class="token function">is_dir</span><span class="token punctuation">(</span><span class="token constant">__FILE__</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span> <span class="token comment">// bool(false)</span>
<span class="token function">var_dump</span><span class="token punctuation">(</span><span class="token function">is_dir</span><span class="token punctuation">(</span><span class="token constant">__DIR__</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span> <span class="token comment">// bool(true)</span>
<span class="token function">var_dump</span><span class="token punctuation">(</span><span class="token function">is_dir</span><span class="token punctuation">(</span><span class="token single-quoted-string string">'.'</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span> <span class="token comment">// bool(true)</span>
<span class="token function">var_dump</span><span class="token punctuation">(</span><span class="token function">is_dir</span><span class="token punctuation">(</span><span class="token single-quoted-string string">'..'</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span> <span class="token comment">// bool(true)</span>
</code></pre>
<h2 id="isexecutable">is_executable</h2>
<pre class="language-"><code class="lang-php"><span class="token delimiter important"><?php</span>
<span class="token function">var_dump</span><span class="token punctuation">(</span><span class="token function">is_executable</span><span class="token punctuation">(</span><span class="token constant">__FILE__</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
<span class="token function">var_dump</span><span class="token punctuation">(</span><span class="token function">is_executable</span><span class="token punctuation">(</span><span class="token constant">__DIR__</span> <span class="token punctuation">.</span> <span class="token single-quoted-string string">'/example.txt'</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
</code></pre>
<h2 id="isfile">is_file</h2>
<pre class="language-"><code class="lang-php"><span class="token delimiter important"><?php</span>
<span class="token function">var_dump</span><span class="token punctuation">(</span><span class="token function">is_file</span><span class="token punctuation">(</span><span class="token constant">__FILE__</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span> <span class="token comment">// bool(true)</span>
<span class="token function">var_dump</span><span class="token punctuation">(</span><span class="token function">is_file</span><span class="token punctuation">(</span><span class="token constant">__DIR__</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span> <span class="token comment">// bool(false)</span>
<span class="token function">var_dump</span><span class="token punctuation">(</span><span class="token function">is_file</span><span class="token punctuation">(</span><span class="token constant">__DIR__</span> <span class="token punctuation">.</span> <span class="token single-quoted-string string">'/example.txt'</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span> <span class="token comment">// bool(true)</span>
<span class="token function">var_dump</span><span class="token punctuation">(</span><span class="token function">is_file</span><span class="token punctuation">(</span><span class="token single-quoted-string string">'.'</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span> <span class="token comment">// bool(false)</span>
<span class="token function">var_dump</span><span class="token punctuation">(</span><span class="token function">is_file</span><span class="token punctuation">(</span><span class="token single-quoted-string string">'..'</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span> <span class="token comment">// bool(false)</span>
</code></pre>
<h2 id="islink">is_link</h2>
<pre class="language-"><code class="lang-php"><span class="token delimiter important"><?php</span>
<span class="token function">var_dump</span><span class="token punctuation">(</span><span class="token function">is_link</span><span class="token punctuation">(</span><span class="token constant">__DIR__</span> <span class="token punctuation">.</span> <span class="token single-quoted-string string">'/link'</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
<span class="token function">var_dump</span><span class="token punctuation">(</span><span class="token function">is_link</span><span class="token punctuation">(</span><span class="token constant">__FILE__</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
</code></pre>
<h2 id="isreadable">is_readable</h2>
<pre class="language-"><code class="lang-php"><span class="token delimiter important"><?php</span>
<span class="token function">var_dump</span><span class="token punctuation">(</span><span class="token function">is_readable</span><span class="token punctuation">(</span><span class="token constant">__DIR__</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
<span class="token function">var_dump</span><span class="token punctuation">(</span><span class="token function">is_readable</span><span class="token punctuation">(</span><span class="token constant">__DIR__</span> <span class="token punctuation">.</span> <span class="token single-quoted-string string">'/example.txt'</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
<span class="token function">var_dump</span><span class="token punctuation">(</span><span class="token function">is_readable</span><span class="token punctuation">(</span><span class="token constant">__FILE__</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
</code></pre>
<h2 id="isuploadedfile">is_uploaded_file</h2>
<pre class="language-"><code class="lang-php"><span class="token delimiter important"><?php</span>
<span class="token function">var_dump</span><span class="token punctuation">(</span><span class="token function">is_uploaded_file</span><span class="token punctuation">(</span><span class="token variable">$_FILES</span><span class="token punctuation">[</span><span class="token single-quoted-string string">'file'</span><span class="token punctuation">]</span><span class="token punctuation">[</span><span class="token single-quoted-string string">'tmp_name'</span><span class="token punctuation">]</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
</code></pre>
<h2 id="iswritable">is_writable</h2>
<pre class="language-"><code class="lang-php"><span class="token delimiter important"><?php</span>
<span class="token function">var_dump</span><span class="token punctuation">(</span><span class="token function">is_writable</span><span class="token punctuation">(</span><span class="token constant">__DIR__</span> <span class="token punctuation">.</span> <span class="token single-quoted-string string">'/example.txt'</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
<span class="token function">var_dump</span><span class="token punctuation">(</span><span class="token function">is_writable</span><span class="token punctuation">(</span><span class="token constant">__FILE__</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
</code></pre>
<h2 id="iswriteable">is_writeable</h2>
<pre class="language-"><code class="lang-php"><span class="token delimiter important"><?php</span>
<span class="token function">var_dump</span><span class="token punctuation">(</span><span class="token function">is_writeable</span><span class="token punctuation">(</span><span class="token constant">__DIR__</span> <span class="token punctuation">.</span> <span class="token single-quoted-string string">'/example.txt'</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
<span class="token function">var_dump</span><span class="token punctuation">(</span><span class="token function">is_writeable</span><span class="token punctuation">(</span><span class="token constant">__FILE__</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
</code></pre>
<h2 id="lchgrp">lchgrp</h2>
<pre class="language-"><code class="lang-php"><span class="token delimiter important"><?php</span>
<span class="token function">var_dump</span><span class="token punctuation">(</span><span class="token function">lchgrp</span><span class="token punctuation">(</span><span class="token constant">__DIR__</span> <span class="token punctuation">.</span> <span class="token single-quoted-string string">'/link'</span><span class="token punctuation">,</span> <span class="token number">0</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
</code></pre>
<h2 id="lchown">lchown</h2>
<pre class="language-"><code class="lang-php"><span class="token delimiter important"><?php</span>
<span class="token function">var_dump</span><span class="token punctuation">(</span><span class="token function">lchown</span><span class="token punctuation">(</span><span class="token constant">__DIR__</span> <span class="token punctuation">.</span> <span class="token single-quoted-string string">'/link'</span><span class="token punctuation">,</span> <span class="token number">0</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
</code></pre>
<h2 id="link">link</h2>
<pre class="language-"><code class="lang-php"><span class="token delimiter important"><?php</span>
<span class="token function">var_dump</span><span class="token punctuation">(</span><span class="token function">link</span><span class="token punctuation">(</span><span class="token constant">__DIR__</span> <span class="token punctuation">.</span> <span class="token single-quoted-string string">'/example.txt'</span><span class="token punctuation">,</span> <span class="token constant">__DIR__</span> <span class="token punctuation">.</span> <span class="token single-quoted-string string">'/link'</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
</code></pre>
<h2 id="linkinfo">linkinfo</h2>
<pre class="language-"><code class="lang-php"><span class="token delimiter important"><?php</span>
<span class="token function">var_dump</span><span class="token punctuation">(</span><span class="token function">linkinfo</span><span class="token punctuation">(</span><span class="token constant">__DIR__</span> <span class="token punctuation">.</span> <span class="token single-quoted-string string">'/link'</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
</code></pre>
<h2 id="lstat">lstat</h2>
<pre class="language-"><code class="lang-php"><span class="token delimiter important"><?php</span>
<span class="token function">var_dump</span><span class="token punctuation">(</span><span class="token function">lstat</span><span class="token punctuation">(</span><span class="token constant">__FILE__</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
<span class="token function">var_dump</span><span class="token punctuation">(</span><span class="token function">lstat</span><span class="token punctuation">(</span><span class="token constant">__DIR__</span> <span class="token punctuation">.</span> <span class="token single-quoted-string string">'/link'</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
</code></pre>
<h2 id="mkdir">mkdir</h2>
<pre class="language-"><code class="lang-php"><span class="token delimiter important"><?php</span>
<span class="token function">var_dump</span><span class="token punctuation">(</span><span class="token function">mkdir</span><span class="token punctuation">(</span><span class="token constant">__DIR__</span> <span class="token punctuation">.</span> <span class="token single-quoted-string string">'/example/'</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
<span class="token function">var_dump</span><span class="token punctuation">(</span><span class="token function">mkdir</span><span class="token punctuation">(</span><span class="token constant">__DIR__</span> <span class="token punctuation">.</span> <span class="token single-quoted-string string">'/example/'</span><span class="token punctuation">,</span> <span class="token number">0777</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
<span class="token function">var_dump</span><span class="token punctuation">(</span><span class="token function">mkdir</span><span class="token punctuation">(</span><span class="token constant">__DIR__</span> <span class="token punctuation">.</span> <span class="token single-quoted-string string">'/example/foo/bar/'</span><span class="token punctuation">,</span> <span class="token number">0777</span><span class="token punctuation">,</span> <span class="token boolean constant">true</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
</code></pre>
<h2 id="moveuploadedfile">move_uploaded_file</h2>
<pre class="language-"><code class="lang-php"><span class="token delimiter important"><?php</span>
<span class="token function">var_dump</span><span class="token punctuation">(</span><span class="token function">move_uploaded_file</span><span class="token punctuation">(</span><span class="token variable">$_FILES</span><span class="token punctuation">[</span><span class="token single-quoted-string string">'file'</span><span class="token punctuation">]</span><span class="token punctuation">[</span><span class="token single-quoted-string string">'tmp_name'</span><span class="token punctuation">]</span><span class="token punctuation">,</span> <span class="token constant">__DIR__</span> <span class="token punctuation">.</span> <span class="token single-quoted-string string">'/'</span> <span class="token punctuation">.</span> <span class="token variable">$_FILES</span><span class="token punctuation">[</span><span class="token single-quoted-string string">'file'</span><span class="token punctuation">]</span><span class="token punctuation">[</span><span class="token single-quoted-string string">'name'</span><span class="token punctuation">]</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
</code></pre>
<h2 id="parseinifile">parse_ini_file</h2>
<pre class="language-"><code class="lang-php"><span class="token delimiter important"><?php</span>
<span class="token function">var_dump</span><span class="token punctuation">(</span><span class="token function">parse_ini_file</span><span class="token punctuation">(</span><span class="token function">php_ini_loaded_file</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
<span class="token function">var_dump</span><span class="token punctuation">(</span><span class="token function">parse_ini_file</span><span class="token punctuation">(</span><span class="token function">php_ini_loaded_file</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">,</span> <span class="token boolean constant">true</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
</code></pre>
<h2 id="parseinistring">parse_ini_string</h2>
<pre class="language-"><code class="lang-php"><span class="token delimiter important"><?php</span>
<span class="token variable">$string</span> <span class="token operator">=</span> <span class="token operator"><</span><span class="token operator"><</span><span class="token operator"><</span><span class="token constant">EOT</span>
<span class="token punctuation">[</span>foo<span class="token punctuation">]</span>
a <span class="token operator">=</span> <span class="token number">1</span>
b <span class="token operator">=</span> <span class="token number">5</span>
<span class="token punctuation">[</span>bar<span class="token punctuation">]</span>
c <span class="token operator">=</span> <span class="token constant">BIRD</span>
d <span class="token operator">=</span> <span class="token double-quoted-string string">"http://www.example.com/~username"</span>
<span class="token punctuation">[</span>baz<span class="token punctuation">]</span>
e<span class="token punctuation">[</span><span class="token punctuation">]</span> <span class="token operator">=</span> <span class="token double-quoted-string string">"7.0"</span>
e<span class="token punctuation">[</span><span class="token punctuation">]</span> <span class="token operator">=</span> <span class="token double-quoted-string string">"7.4"</span>
<span class="token constant">EOT</span><span class="token punctuation">;</span>
<span class="token function">var_dump</span><span class="token punctuation">(</span><span class="token function">parse_ini_string</span><span class="token punctuation">(</span><span class="token variable">$string</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span> <span class="token comment">// array(5) { ["a"]=> string(1) "1" ["b"]=> string(1) "5" ["c"]=> string(4) "BIRD" ["d"]=> string(32) "http://www.example.com/~username" ["e"]=> array(2) { [0]=> string(3) "7.0" [1]=> string(3) "7.4" } }</span>
<span class="token function">var_dump</span><span class="token punctuation">(</span><span class="token function">parse_ini_string</span><span class="token punctuation">(</span><span class="token variable">$string</span><span class="token punctuation">,</span> <span class="token boolean constant">true</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span> <span class="token comment">// array(3) { ["foo"]=> array(2) { ["a"]=> string(1) "1" ["b"]=> string(1) "5" } ["bar"]=> array(2) { ["c"]=> string(4) "BIRD" ["d"]=> string(32) "http://www.example.com/~username" } ["baz"]=> array(1) { ["e"]=> array(2) { [0]=> string(3) "7.0" [1]=> string(3) "7.4" } } }</span>
</code></pre>
<h2 id="pathinfo">pathinfo</h2>
<pre class="language-"><code class="lang-php"><span class="token delimiter important"><?php</span>
<span class="token function">var_dump</span><span class="token punctuation">(</span><span class="token function">pathinfo</span><span class="token punctuation">(</span><span class="token constant">__FILE__</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
<span class="token function">var_dump</span><span class="token punctuation">(</span><span class="token function">pathinfo</span><span class="token punctuation">(</span><span class="token constant">__FILE__</span><span class="token punctuation">,</span> <span class="token constant">PATHINFO_DIRNAME</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
<span class="token function">var_dump</span><span class="token punctuation">(</span><span class="token function">pathinfo</span><span class="token punctuation">(</span><span class="token constant">__FILE__</span><span class="token punctuation">,</span> <span class="token constant">PATHINFO_BASENAME</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
<span class="token function">var_dump</span><span class="token punctuation">(</span><span class="token function">pathinfo</span><span class="token punctuation">(</span><span class="token constant">__FILE__</span><span class="token punctuation">,</span> <span class="token constant">PATHINFO_EXTENSION</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
<span class="token function">var_dump</span><span class="token punctuation">(</span><span class="token function">pathinfo</span><span class="token punctuation">(</span><span class="token constant">__FILE__</span><span class="token punctuation">,</span> <span class="token constant">PATHINFO_FILENAME</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
</code></pre>
<h2 id="pclose">pclose</h2>
<pre class="language-"><code class="lang-php"><span class="token delimiter important"><?php</span>
<span class="token variable">$handle</span> <span class="token operator">=</span> <span class="token function">popen</span><span class="token punctuation">(</span><span class="token single-quoted-string string">'dir'</span><span class="token punctuation">,</span> <span class="token single-quoted-string string">'r'</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
<span class="token function">var_dump</span><span class="token punctuation">(</span><span class="token function">pclose</span><span class="token punctuation">(</span><span class="token variable">$handle</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
</code></pre>
<h2 id="popen">popen</h2>
<pre class="language-"><code class="lang-php"><span class="token delimiter important"><?php</span>
<span class="token function">var_dump</span><span class="token punctuation">(</span><span class="token function">popen</span><span class="token punctuation">(</span><span class="token single-quoted-string string">'dir'</span><span class="token punctuation">,</span> <span class="token single-quoted-string string">'r'</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
</code></pre>
<h2 id="readfile">readfile</h2>
<pre class="language-"><code class="lang-php"><span class="token delimiter important"><?php</span>
<span class="token function">readfile</span><span class="token punctuation">(</span><span class="token constant">__DIR__</span> <span class="token punctuation">.</span> <span class="token single-quoted-string string">'/example.txt'</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
<span class="token comment">// foo</span>
<span class="token comment">// bar</span>
<span class="token comment">// baz</span>
<span class="token comment">// qux</span>
<span class="token function">readfile</span><span class="token punctuation">(</span><span class="token constant">__DIR__</span> <span class="token punctuation">.</span> <span class="token single-quoted-string string">'/example.txt'</span><span class="token punctuation">,</span> <span class="token boolean constant">true</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
<span class="token comment">// foo</span>
<span class="token comment">// bar</span>
<span class="token comment">// baz</span>
<span class="token comment">// qux</span>
</code></pre>
<p>上例中的 <code>example.txt</code> 文件内容：</p>
<pre class="language-"><code>foo
bar
baz
qux
</code></pre><h2 id="readlink">readlink</h2>
<pre class="language-"><code class="lang-php"><span class="token delimiter important"><?php</span>
<span class="token function">var_dump</span><span class="token punctuation">(</span><span class="token function">readlink</span><span class="token punctuation">(</span><span class="token constant">__DIR__</span> <span class="token punctuation">.</span> <span class="token single-quoted-string string">'/link'</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
</code></pre>
<h2 id="realpathcacheget">realpath_cache_get</h2>
<pre class="language-"><code class="lang-php"><span class="token delimiter important"><?php</span>
<span class="token function">var_dump</span><span class="token punctuation">(</span><span class="token function">realpath_cache_get</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
</code></pre>
<h2 id="realpathcachesize">realpath_cache_size</h2>
<pre class="language-"><code class="lang-php"><span class="token delimiter important"><?php</span>
<span class="token function">var_dump</span><span class="token punctuation">(</span><span class="token function">realpath_cache_size</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
</code></pre>
<h2 id="realpath">realpath</h2>
<pre class="language-"><code class="lang-php"><span class="token delimiter important"><?php</span>
<span class="token function">var_dump</span><span class="token punctuation">(</span><span class="token function">realpath</span><span class="token punctuation">(</span><span class="token single-quoted-string string">'example.txt'</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
<span class="token function">var_dump</span><span class="token punctuation">(</span><span class="token function">realpath</span><span class="token punctuation">(</span><span class="token constant">__DIR__</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
<span class="token function">var_dump</span><span class="token punctuation">(</span><span class="token function">realpath</span><span class="token punctuation">(</span><span class="token constant">__DIR__</span> <span class="token punctuation">.</span> <span class="token single-quoted-string string">'/example.txt'</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
<span class="token function">var_dump</span><span class="token punctuation">(</span><span class="token function">realpath</span><span class="token punctuation">(</span><span class="token constant">__FILE__</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
</code></pre>
<h2 id="rename">rename</h2>
<pre class="language-"><code class="lang-php"><span class="token delimiter important"><?php</span>
<span class="token function">var_dump</span><span class="token punctuation">(</span><span class="token function">rename</span><span class="token punctuation">(</span><span class="token constant">__DIR__</span> <span class="token punctuation">.</span> <span class="token single-quoted-string string">'/example.txt'</span><span class="token punctuation">,</span> <span class="token constant">__DIR__</span> <span class="token punctuation">.</span> <span class="token single-quoted-string string">'/test.txt'</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span> <span class="token comment">// bool(true)</span>
<span class="token function">var_dump</span><span class="token punctuation">(</span><span class="token function">rename</span><span class="token punctuation">(</span><span class="token constant">__DIR__</span> <span class="token punctuation">.</span> <span class="token single-quoted-string string">'/example/'</span><span class="token punctuation">,</span> <span class="token constant">__DIR__</span> <span class="token punctuation">.</span> <span class="token single-quoted-string string">'/test/'</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span> <span class="token comment">// bool(true)</span>
</code></pre>
<h2 id="rewind">rewind</h2>
<pre class="language-"><code class="lang-php"><span class="token delimiter important"><?php</span>
<span class="token variable">$handle</span> <span class="token operator">=</span> <span class="token function">fopen</span><span class="token punctuation">(</span><span class="token constant">__DIR__</span> <span class="token punctuation">.</span> <span class="token single-quoted-string string">'/example.txt'</span><span class="token punctuation">,</span> <span class="token single-quoted-string string">'r+'</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
<span class="token function">fwrite</span><span class="token punctuation">(</span><span class="token variable">$handle</span><span class="token punctuation">,</span> <span class="token single-quoted-string string">'bar baz qux'</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
<span class="token function">var_dump</span><span class="token punctuation">(</span><span class="token function">rewind</span><span class="token punctuation">(</span><span class="token variable">$handle</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span> <span class="token comment">// bool(true)</span>
<span class="token function">fwrite</span><span class="token punctuation">(</span><span class="token variable">$handle</span><span class="token punctuation">,</span> <span class="token single-quoted-string string">'foo'</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
<span class="token function">var_dump</span><span class="token punctuation">(</span><span class="token function">rewind</span><span class="token punctuation">(</span><span class="token variable">$handle</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span> <span class="token comment">// bool(true)</span>
<span class="token function">var_dump</span><span class="token punctuation">(</span><span class="token function">fread</span><span class="token punctuation">(</span><span class="token variable">$handle</span><span class="token punctuation">,</span> <span class="token function">filesize</span><span class="token punctuation">(</span><span class="token constant">__DIR__</span> <span class="token punctuation">.</span> <span class="token single-quoted-string string">'/example.txt'</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span> <span class="token comment">// string(11) "foo baz qux"</span>
</code></pre>
<h2 id="rmdir">rmdir</h2>
<pre class="language-"><code class="lang-php"><span class="token delimiter important"><?php</span>
<span class="token function">var_dump</span><span class="token punctuation">(</span><span class="token function">rmdir</span><span class="token punctuation">(</span><span class="token constant">__DIR__</span> <span class="token punctuation">.</span> <span class="token single-quoted-string string">'/example/'</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
</code></pre>
<h2 id="setfilebuffer">set_file_buffer</h2>
<pre class="language-"><code class="lang-php"><span class="token delimiter important"><?php</span>
<span class="token function">var_dump</span><span class="token punctuation">(</span><span class="token function">set_file_buffer</span><span class="token punctuation">(</span><span class="token function">fopen</span><span class="token punctuation">(</span><span class="token constant">__DIR__</span> <span class="token punctuation">.</span> <span class="token single-quoted-string string">'/example.txt'</span><span class="token punctuation">,</span> <span class="token single-quoted-string string">'w'</span><span class="token punctuation">)</span><span class="token punctuation">,</span> <span class="token number">0</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
</code></pre>
<h2 id="stat">stat</h2>
<pre class="language-"><code class="lang-php"><span class="token delimiter important"><?php</span>
<span class="token function">var_dump</span><span class="token punctuation">(</span><span class="token function">stat</span><span class="token punctuation">(</span><span class="token constant">__FILE__</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
</code></pre>
<h2 id="symlink">symlink</h2>
<pre class="language-"><code class="lang-php"><span class="token delimiter important"><?php</span>
<span class="token function">var_dump</span><span class="token punctuation">(</span><span class="token function">symlink</span><span class="token punctuation">(</span><span class="token constant">__DIR__</span> <span class="token punctuation">.</span> <span class="token single-quoted-string string">'/example.txt'</span><span class="token punctuation">,</span> <span class="token constant">__DIR__</span> <span class="token punctuation">.</span> <span class="token single-quoted-string string">'/link'</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
</code></pre>
<h2 id="tempnam">tempnam</h2>
<pre class="language-"><code class="lang-php"><span class="token delimiter important"><?php</span>
<span class="token function">var_dump</span><span class="token punctuation">(</span><span class="token function">tempnam</span><span class="token punctuation">(</span><span class="token constant">__DIR__</span><span class="token punctuation">,</span> <span class="token single-quoted-string string">'tmp'</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
</code></pre>
<h2 id="tmpfile">tmpfile</h2>
<pre class="language-"><code class="lang-php"><span class="token delimiter important"><?php</span>
<span class="token function">var_dump</span><span class="token punctuation">(</span><span class="token function">tmpfile</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
</code></pre>
<h2 id="touch">touch</h2>
<pre class="language-"><code class="lang-php"><span class="token delimiter important"><?php</span>
<span class="token function">var_dump</span><span class="token punctuation">(</span><span class="token function">touch</span><span class="token punctuation">(</span><span class="token constant">__DIR__</span> <span class="token punctuation">.</span> <span class="token single-quoted-string string">'/example.txt'</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
<span class="token function">var_dump</span><span class="token punctuation">(</span><span class="token function">touch</span><span class="token punctuation">(</span><span class="token constant">__DIR__</span> <span class="token punctuation">.</span> <span class="token single-quoted-string string">'/example.txt'</span><span class="token punctuation">,</span> <span class="token function">time</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
<span class="token function">var_dump</span><span class="token punctuation">(</span><span class="token function">touch</span><span class="token punctuation">(</span><span class="token constant">__DIR__</span> <span class="token punctuation">.</span> <span class="token single-quoted-string string">'/example.txt'</span><span class="token punctuation">,</span> <span class="token function">time</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">,</span> <span class="token function">time</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
</code></pre>
<h2 id="umask">umask</h2>
<pre class="language-"><code class="lang-php"><span class="token delimiter important"><?php</span>
<span class="token function">var_dump</span><span class="token punctuation">(</span><span class="token function">umask</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
<span class="token function">var_dump</span><span class="token punctuation">(</span><span class="token function">umask</span><span class="token punctuation">(</span><span class="token number">0777</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
</code></pre>
<h2 id="unlink">unlink</h2>
<pre class="language-"><code class="lang-php"><span class="token delimiter important"><?php</span>
<span class="token function">var_dump</span><span class="token punctuation">(</span><span class="token function">unlink</span><span class="token punctuation">(</span><span class="token constant">__DIR__</span> <span class="token punctuation">.</span> <span class="token single-quoted-string string">'/example.txt'</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
</code></pre>
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