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require
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include_once
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返回值
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可变函数
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类与对象
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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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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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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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<h1 id="网络">网络</h1>
<ul>
<li><a href="#checkdnsrr">checkdnsrr - 给指定的主机或者 IP 地址做 DNS 通信检查</a></li>
<li><a href="#closelog">closelog - 关闭系统日志链接</a></li>
<li><a href="#dnscheckrecord">dns_check_record - 给指定的主机或者 IP 地址做 DNS 通信检查</a></li>
<li><a href="#dnsgetmx">dns_get_mx - 获取互联网主机名对应的 MX 记录</a></li>
<li><a href="#dnsgetrecord">dns_get_record - 获取指定主机的 DNS 记录</a></li>
<li><a href="#fsockopen">fsockopen - 打开一个网络连接或者一个 Unix 套接字连接</a></li>
<li><a href="#gethostbyaddr">gethostbyaddr - 获取指定的 IP 地址对应的主机名</a></li>
<li><a href="#gethostbyname">gethostbyname - 返回主机名对应的 IPv4 地址</a></li>
<li><a href="#gethostbynamel">gethostbynamel - 获取互联网主机名对应的 IPv4 地址列表</a></li>
<li><a href="#gethostname">gethostname - 获取主机名</a></li>
<li><a href="#getmxrr">getmxrr - 获取互联网主机名对应的 MX 记录</a></li>
<li><a href="#getprotobyname">getprotobyname - 获取与协议名称关联的协议编号</a></li>
<li><a href="#getprotobynumber">getprotobynumber - 获取与协议编号关联的协议名称</a></li>
<li><a href="#getservbyname">getservbyname - 获取互联网服务协议对应的端口</a></li>
<li><a href="#getservbyport">getservbyport - 获取与端口和协议相对应的互联网服务</a></li>
<li><a href="#headerregistercallback">header_register_callback - 调用一个 header 函数</a></li>
<li><a href="#headerremove">header_remove - 删除之前设置的 HTTP 头</a></li>
<li><a href="#header">header - 发送原生 HTTP 头</a></li>
<li><a href="#headerslist">headers_list - 返回已发送的 HTTP 响应头（或准备发送的）</a></li>
<li><a href="#headerssent">headers_sent - 检测 HTTP 头是否已经发送</a></li>
<li><a href="#httpresponsecode">http_response_code - 获取 / 设置响应的 HTTP 状态码</a></li>
<li><a href="#inetntop">inet_ntop - 将压缩的 IP 地址转换为人类可读的表示形式</a></li>
<li><a href="#inetpton">inet_pton - 将人类可读的 IP 地址转换为压缩的表示形式</a></li>
<li><a href="#ip2long">ip2long - 将 IPV4 的字符串互联网协议转换成长整型数字</a></li>
<li><a href="#long2ip">long2ip - 将长整型转化为字符串形式带点的互联网标准格式地址（IPV4）</a></li>
<li><a href="#openlog">openlog - 打开与系统记录器的连接</a></li>
<li><a href="#pfsockopen">pfsockopen - 打开一个持久的网络连接或者 Unix 套接字连接</a></li>
<li><a href="#setcookie">setcookie - 发送 Cookie</a></li>
<li><a href="#setrawcookie">setrawcookie - 发送未经 URL 编码的 cookie</a></li>
<li><a href="#socketgetstatus">socket_get_status - 从封装协议文件指针中取得报头／元数据</a></li>
<li><a href="#socketsetblocking">socket_set_blocking - 为资源流设置阻塞或者阻塞模式</a></li>
<li><a href="#socketsettimeout">socket_set_timeout - 在资源流上设置超时时间</a></li>
<li><a href="#syslog">syslog - 生成系统日志消息</a></li>
</ul>
<h2 id="checkdnsrr">checkdnsrr</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">checkdnsrr</span><span class="token punctuation">(</span><span class="token single-quoted-string string">'example.com'</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">checkdnsrr</span><span class="token punctuation">(</span><span class="token single-quoted-string string">'github.com'</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">checkdnsrr</span><span class="token punctuation">(</span><span class="token single-quoted-string string">'github.com'</span><span class="token punctuation">,</span> <span class="token single-quoted-string string">'MX'</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">checkdnsrr</span><span class="token punctuation">(</span><span class="token single-quoted-string string">'github.com'</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 comment">// bool(true)</span>
</code></pre>
<h2 id="closelog">closelog</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">closelog</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">// bool(true)</span>
</code></pre>
<h2 id="dnscheckrecord">dns_check_record</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">dns_check_record</span><span class="token punctuation">(</span><span class="token single-quoted-string string">'example.com'</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">dns_check_record</span><span class="token punctuation">(</span><span class="token single-quoted-string string">'github.com'</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">dns_check_record</span><span class="token punctuation">(</span><span class="token single-quoted-string string">'github.com'</span><span class="token punctuation">,</span> <span class="token single-quoted-string string">'MX'</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">dns_check_record</span><span class="token punctuation">(</span><span class="token single-quoted-string string">'github.com'</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 comment">// bool(true)</span>
</code></pre>
<h2 id="dnsgetmx">dns_get_mx</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">dns_get_mx</span><span class="token punctuation">(</span><span class="token single-quoted-string string">'github.com'</span><span class="token punctuation">,</span> <span class="token variable">$mxhosts</span><span class="token punctuation">,</span> <span class="token variable">$weight</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 variable">$mxhosts</span><span class="token punctuation">,</span> <span class="token variable">$weight</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
</code></pre>
<h2 id="dnsgetrecord">dns_get_record</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">dns_get_record</span><span class="token punctuation">(</span><span class="token single-quoted-string string">'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">dns_get_record</span><span class="token punctuation">(</span><span class="token single-quoted-string string">'github.com'</span><span class="token punctuation">,</span> <span class="token constant">DNS_ANY</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">dns_get_record</span><span class="token punctuation">(</span><span class="token single-quoted-string string">'github.com'</span><span class="token punctuation">,</span> <span class="token constant">DNS_MX</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">dns_get_record</span><span class="token punctuation">(</span><span class="token single-quoted-string string">'github.com'</span><span class="token punctuation">,</span> <span class="token constant">DNS_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">dns_get_record</span><span class="token punctuation">(</span><span class="token single-quoted-string string">'github.com'</span><span class="token punctuation">,</span> <span class="token constant">DNS_ANY</span><span class="token punctuation">,</span> <span class="token variable">$authns</span><span class="token punctuation">,</span> <span class="token variable">$addtl</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 variable">$authns</span><span class="token punctuation">,</span> <span class="token variable">$addtl</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
</code></pre>
<h2 id="fsockopen">fsockopen</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">fsockopen</span><span class="token punctuation">(</span><span class="token single-quoted-string string">'www.example.com'</span><span class="token punctuation">,</span> <span class="token number">80</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span> <span class="token comment">// resource(4) of type (stream)</span>
<span class="token function">var_dump</span><span class="token punctuation">(</span><span class="token function">fsockopen</span><span class="token punctuation">(</span><span class="token single-quoted-string string">'www.example.com'</span><span class="token punctuation">,</span> <span class="token number">80</span><span class="token punctuation">,</span> <span class="token variable">$errno</span><span class="token punctuation">,</span> <span class="token variable">$errstr</span><span class="token punctuation">,</span> <span class="token number">30</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span> <span class="token comment">// resource(5) of type (stream)</span>
</code></pre>
<h2 id="gethostbyaddr">gethostbyaddr</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">gethostbyaddr</span><span class="token punctuation">(</span><span class="token single-quoted-string string">'127.0.0.1'</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">gethostbyaddr</span><span class="token punctuation">(</span><span class="token single-quoted-string string">'192.30.255.112'</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">gethostbyaddr</span><span class="token punctuation">(</span><span class="token variable">$_SERVER</span><span class="token punctuation">[</span><span class="token single-quoted-string string">'REMOTE_ADDR'</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="gethostbyname">gethostbyname</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">gethostbyname</span><span class="token punctuation">(</span><span class="token single-quoted-string string">'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">gethostbyname</span><span class="token punctuation">(</span><span class="token single-quoted-string string">'example.com'</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
</code></pre>
<h2 id="gethostbynamel">gethostbynamel</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">gethostbynamel</span><span class="token punctuation">(</span><span class="token single-quoted-string string">'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">gethostbynamel</span><span class="token punctuation">(</span><span class="token single-quoted-string string">'example.com'</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
</code></pre>
<h2 id="gethostname">gethostname</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">gethostname</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="getmxrr">getmxrr</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">getmxrr</span><span class="token punctuation">(</span><span class="token single-quoted-string string">'github.com'</span><span class="token punctuation">,</span> <span class="token variable">$mxhosts</span><span class="token punctuation">,</span> <span class="token variable">$weight</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span> <span class="token comment">// bool(true)</span>
<span class="token function">var_dump</span><span class="token punctuation">(</span><span class="token variable">$mxhosts</span><span class="token punctuation">,</span> <span class="token variable">$weight</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
</code></pre>
<h2 id="getprotobyname">getprotobyname</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">getprotobyname</span><span class="token punctuation">(</span><span class="token single-quoted-string string">'tcp'</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span> <span class="token comment">// int(6)</span>
<span class="token function">var_dump</span><span class="token punctuation">(</span><span class="token function">getprotobyname</span><span class="token punctuation">(</span><span class="token single-quoted-string string">'udp'</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span> <span class="token comment">// int(17)</span>
</code></pre>
<h2 id="getprotobynumber">getprotobynumber</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">getprotobynumber</span><span class="token punctuation">(</span><span class="token number">6</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span> <span class="token comment">// string(3) "tcp"</span>
<span class="token function">var_dump</span><span class="token punctuation">(</span><span class="token function">getprotobynumber</span><span class="token punctuation">(</span><span class="token number">17</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span> <span class="token comment">// string(3) "udp"</span>
</code></pre>
<h2 id="getservbyname">getservbyname</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">getservbyname</span><span class="token punctuation">(</span><span class="token single-quoted-string string">'http'</span><span class="token punctuation">,</span> <span class="token single-quoted-string string">'tcp'</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span> <span class="token comment">// int(80)</span>
<span class="token function">var_dump</span><span class="token punctuation">(</span><span class="token function">getservbyname</span><span class="token punctuation">(</span><span class="token single-quoted-string string">'www'</span><span class="token punctuation">,</span> <span class="token single-quoted-string string">'tcp'</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span> <span class="token comment">// int(80)</span>
<span class="token function">var_dump</span><span class="token punctuation">(</span><span class="token function">getservbyname</span><span class="token punctuation">(</span><span class="token single-quoted-string string">'ftp'</span><span class="token punctuation">,</span> <span class="token single-quoted-string string">'tcp'</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span> <span class="token comment">// int(21)</span>
<span class="token function">var_dump</span><span class="token punctuation">(</span><span class="token function">getservbyname</span><span class="token punctuation">(</span><span class="token single-quoted-string string">'ssh'</span><span class="token punctuation">,</span> <span class="token single-quoted-string string">'tcp'</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span> <span class="token comment">// int(22)</span>
</code></pre>
<h2 id="getservbyport">getservbyport</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">getservbyport</span><span class="token punctuation">(</span><span class="token number">80</span><span class="token punctuation">,</span> <span class="token single-quoted-string string">'tcp'</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span> <span class="token comment">// string(4) "http"</span>
<span class="token function">var_dump</span><span class="token punctuation">(</span><span class="token function">getservbyport</span><span class="token punctuation">(</span><span class="token number">21</span><span class="token punctuation">,</span> <span class="token single-quoted-string string">'tcp'</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span> <span class="token comment">// string(3) "ftp"</span>
<span class="token function">var_dump</span><span class="token punctuation">(</span><span class="token function">getservbyport</span><span class="token punctuation">(</span><span class="token number">22</span><span class="token punctuation">,</span> <span class="token single-quoted-string string">'tcp'</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span> <span class="token comment">// string(3) "ssh"</span>
</code></pre>
<h2 id="headerregistercallback">header_register_callback</h2>
<pre class="language-"><code class="lang-php"><span class="token delimiter important"><?php</span>
<span class="token comment">/**
* Just a test function.
*
* @param void
* @return void
*/</span>
<span class="token keyword">function</span> <span class="token function">foo</span><span class="token punctuation">(</span><span class="token punctuation">)</span>
<span class="token punctuation">{</span>
<span class="token comment">//</span>
<span class="token punctuation">}</span>
<span class="token function">var_dump</span><span class="token punctuation">(</span><span class="token function">header_register_callback</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="headerremove">header_remove</h2>
<pre class="language-"><code class="lang-php"><span class="token delimiter important"><?php</span>
<span class="token function">header</span><span class="token punctuation">(</span><span class="token single-quoted-string string">'Location: http://www.example.com'</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
<span class="token function">header_remove</span><span class="token punctuation">(</span><span class="token single-quoted-string string">'Location'</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
<span class="token function">header</span><span class="token punctuation">(</span><span class="token single-quoted-string string">'Foo: foo'</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
<span class="token function">header</span><span class="token punctuation">(</span><span class="token single-quoted-string string">'Bar: bar'</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
<span class="token function">header_remove</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
</code></pre>
<h2 id="header">header</h2>
<pre class="language-"><code class="lang-php"><span class="token delimiter important"><?php</span>
<span class="token function">header</span><span class="token punctuation">(</span><span class="token single-quoted-string string">'Location: http://www.example.com'</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
<span class="token function">header</span><span class="token punctuation">(</span><span class="token single-quoted-string string">'HTTP/1.1 404 Not Found'</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
</code></pre>
<h2 id="headerslist">headers_list</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">headers_list</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="headerssent">headers_sent</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">headers_sent</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">headers_sent</span><span class="token punctuation">(</span><span class="token variable">$file</span><span class="token punctuation">,</span> <span class="token variable">$line</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
</code></pre>
<h2 id="httpresponsecode">http_response_code</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">http_response_code</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">// bool(false)</span>
<span class="token function">var_dump</span><span class="token punctuation">(</span><span class="token function">http_response_code</span><span class="token punctuation">(</span><span class="token number">200</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">http_response_code</span><span class="token punctuation">(</span><span class="token number">404</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span> <span class="token comment">// int(200)</span>
<span class="token function">var_dump</span><span class="token punctuation">(</span><span class="token function">http_response_code</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">// int(404)</span>
</code></pre>
<h2 id="inetntop">inet_ntop</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">inet_ntop</span><span class="token punctuation">(</span><span class="token function">chr</span><span class="token punctuation">(</span><span class="token number">127</span><span class="token punctuation">)</span> <span class="token punctuation">.</span> <span class="token function">chr</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 function">chr</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 function">chr</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(9) "127.0.0.1"</span>
<span class="token function">var_dump</span><span class="token punctuation">(</span><span class="token function">inet_ntop</span><span class="token punctuation">(</span><span class="token function">chr</span><span class="token punctuation">(</span><span class="token number">192</span><span class="token punctuation">)</span> <span class="token punctuation">.</span> <span class="token function">chr</span><span class="token punctuation">(</span><span class="token number">168</span><span class="token punctuation">)</span> <span class="token punctuation">.</span> <span class="token function">chr</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 function">chr</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(11) "192.168.1.1"</span>
</code></pre>
<h2 id="inetpton">inet_pton</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">inet_pton</span><span class="token punctuation">(</span><span class="token single-quoted-string string">'127.0.0.1'</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">inet_pton</span><span class="token punctuation">(</span><span class="token single-quoted-string string">'192.168.1.1'</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
</code></pre>
<h2 id="ip2long">ip2long</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">ip2long</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">ip2long</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">ip2long</span><span class="token punctuation">(</span><span class="token single-quoted-string string">'127.0.0.1'</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span> <span class="token comment">// int(2130706433)</span>
<span class="token function">var_dump</span><span class="token punctuation">(</span><span class="token function">ip2long</span><span class="token punctuation">(</span><span class="token single-quoted-string string">'192.168.1.1'</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span> <span class="token comment">// int(3232235777)</span>
<span class="token function">var_dump</span><span class="token punctuation">(</span><span class="token function">ip2long</span><span class="token punctuation">(</span><span class="token single-quoted-string string">'192.168.1.256'</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="long2ip">long2ip</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">long2ip</span><span class="token punctuation">(</span><span class="token number">2130706433</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span> <span class="token comment">// string(9) "127.0.0.1"</span>
<span class="token function">var_dump</span><span class="token punctuation">(</span><span class="token function">long2ip</span><span class="token punctuation">(</span><span class="token number">3232235777</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span> <span class="token comment">// string(11) "192.168.1.1"</span>
</code></pre>
<h2 id="openlog">openlog</h2>
<pre class="language-"><code class="lang-php"><span class="token delimiter important"><?php</span>
<span class="token function">openlog</span><span class="token punctuation">(</span><span class="token single-quoted-string string">'log'</span><span class="token punctuation">,</span> <span class="token constant">LOG_PID</span> <span class="token operator">|</span> <span class="token constant">LOG_PERROR</span><span class="token punctuation">,</span> <span class="token constant">LOG_USER</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
</code></pre>
<h2 id="pfsockopen">pfsockopen</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">pfsockopen</span><span class="token punctuation">(</span><span class="token single-quoted-string string">'www.example.com'</span><span class="token punctuation">,</span> <span class="token number">80</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span> <span class="token comment">// resource(4) of type (persistent stream)</span>
<span class="token function">var_dump</span><span class="token punctuation">(</span><span class="token function">pfsockopen</span><span class="token punctuation">(</span><span class="token single-quoted-string string">'www.example.com'</span><span class="token punctuation">,</span> <span class="token number">80</span><span class="token punctuation">,</span> <span class="token variable">$errno</span><span class="token punctuation">,</span> <span class="token variable">$errstr</span><span class="token punctuation">,</span> <span class="token number">30</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span> <span class="token comment">// resource(5) of type (persistent stream)</span>
</code></pre>
<h2 id="setcookie">setcookie</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">setcookie</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">'foo'</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">setcookie</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">'foo'</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 operator">+</span> <span class="token number">3600</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">setcookie</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">'foo'</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 operator">+</span> <span class="token number">3600</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">setcookie</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">'foo'</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 operator">+</span> <span class="token number">3600</span><span class="token punctuation">,</span> <span class="token single-quoted-string string">'/'</span><span class="token punctuation">,</span> <span class="token single-quoted-string string">'example.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">setcookie</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">'foo'</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 operator">+</span> <span class="token number">3600</span><span class="token punctuation">,</span> <span class="token single-quoted-string string">'/'</span><span class="token punctuation">,</span> <span class="token single-quoted-string string">'example.com'</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">setcookie</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">'foo'</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 operator">+</span> <span class="token number">3600</span><span class="token punctuation">,</span> <span class="token single-quoted-string string">'/'</span><span class="token punctuation">,</span> <span class="token single-quoted-string string">'example.com'</span><span class="token punctuation">,</span> <span class="token boolean constant">true</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="setrawcookie">setrawcookie</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">setrawcookie</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">'foo'</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">setrawcookie</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">'foo'</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 operator">+</span> <span class="token number">3600</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">setrawcookie</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">'foo'</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 operator">+</span> <span class="token number">3600</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">setrawcookie</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">'foo'</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 operator">+</span> <span class="token number">3600</span><span class="token punctuation">,</span> <span class="token single-quoted-string string">'/'</span><span class="token punctuation">,</span> <span class="token single-quoted-string string">'example.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">setrawcookie</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">'foo'</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 operator">+</span> <span class="token number">3600</span><span class="token punctuation">,</span> <span class="token single-quoted-string string">'/'</span><span class="token punctuation">,</span> <span class="token single-quoted-string string">'example.com'</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">setrawcookie</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">'foo'</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 operator">+</span> <span class="token number">3600</span><span class="token punctuation">,</span> <span class="token single-quoted-string string">'/'</span><span class="token punctuation">,</span> <span class="token single-quoted-string string">'example.com'</span><span class="token punctuation">,</span> <span class="token boolean constant">true</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="socketgetstatus">socket_get_status</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">socket_get_status</span><span class="token punctuation">(</span><span class="token function">fsockopen</span><span class="token punctuation">(</span><span class="token single-quoted-string string">'www.example.com'</span><span class="token punctuation">,</span> <span class="token number">80</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="socketsetblocking">socket_set_blocking</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">socket_set_blocking</span><span class="token punctuation">(</span><span class="token function">fsockopen</span><span class="token punctuation">(</span><span class="token single-quoted-string string">'www.example.com'</span><span class="token punctuation">,</span> <span class="token number">80</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> <span class="token comment">// bool(true)</span>
<span class="token function">var_dump</span><span class="token punctuation">(</span><span class="token function">socket_set_blocking</span><span class="token punctuation">(</span><span class="token function">fsockopen</span><span class="token punctuation">(</span><span class="token single-quoted-string string">'www.example.com'</span><span class="token punctuation">,</span> <span class="token number">80</span><span class="token punctuation">)</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>
<h2 id="socketsettimeout">socket_set_timeout</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">socket_set_timeout</span><span class="token punctuation">(</span><span class="token function">fsockopen</span><span class="token punctuation">(</span><span class="token single-quoted-string string">'www.example.com'</span><span class="token punctuation">,</span> <span class="token number">80</span><span class="token punctuation">)</span><span class="token punctuation">,</span> <span class="token number">30</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="syslog">syslog</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">syslog</span><span class="token punctuation">(</span><span class="token constant">LOG_ERR</span><span class="token punctuation">,</span> <span class="token single-quoted-string string">'PHP Fatal error: Error!'</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">syslog</span><span class="token punctuation">(</span><span class="token constant">LOG_WARNING</span><span class="token punctuation">,</span> <span class="token single-quoted-string string">'PHP Warning: Warning!'</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">syslog</span><span class="token punctuation">(</span><span class="token constant">LOG_NOTICE</span><span class="token punctuation">,</span> <span class="token single-quoted-string string">'PHP Notice: Notice!'</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
</code></pre>
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