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PHP
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语言参考
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基本语法
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PHP 标记
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从 HTML 中分离
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指令分隔符
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注释
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类型
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Boolean 布尔类型
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Integer 整型
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Float 浮点型
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String 字符串
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Array 数组
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Object 对象
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Resource 资源类型
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NULL
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Callable 可调用类型
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类型转换的判别
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变量
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基本语法
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变量范围
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可变变量
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来自 PHP 之外的变量
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常量
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基本语法
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魔术常量
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表达式
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运算符
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运算符优先级
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算数运算符
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赋值运算符
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位运算符
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比较运算符
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错误控制运算符
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执行运算符
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递增递减运算符
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逻辑运算符
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字符串运算符
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数组运算符
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类型运算符
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流程控制
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if
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else
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elseif
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while
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do-while
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for
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foreach
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switch
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break
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continue
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<a href="语言参考/流程控制/流程控制的替代语法.html">
流程控制的替代语法
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declare
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<li class="chapter " data-level="1.1.1.7.13" data-path="语言参考/流程控制/return.html">
<a href="语言参考/流程控制/return.html">
return
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<li class="chapter " data-level="1.1.1.7.14" data-path="语言参考/流程控制/require.html">
<a href="语言参考/流程控制/require.html">
require
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<li class="chapter " data-level="1.1.1.7.15" data-path="语言参考/流程控制/include.html">
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include
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<li class="chapter " data-level="1.1.1.7.16" data-path="语言参考/流程控制/require_once.html">
<a href="语言参考/流程控制/require_once.html">
require_once
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<li class="chapter " data-level="1.1.1.7.17" data-path="语言参考/流程控制/include_once.html">
<a href="语言参考/流程控制/include_once.html">
include_once
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</li>
<li class="chapter " data-level="1.1.1.7.18" data-path="语言参考/流程控制/goto.html">
<a href="语言参考/流程控制/goto.html">
goto
</a>
</li>
</ul>
</li>
<li class="chapter " data-level="1.1.1.8" data-path="语言参考/函数.html">
<a href="语言参考/函数.html">
函数
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<li class="chapter " data-level="1.1.1.8.1" data-path="语言参考/函数/用户自定义函数.html">
<a href="语言参考/函数/用户自定义函数.html">
用户自定义函数
</a>
</li>
<li class="chapter " data-level="1.1.1.8.2" data-path="语言参考/函数/函数的参数.html">
<a href="语言参考/函数/函数的参数.html">
函数的参数
</a>
</li>
<li class="chapter " data-level="1.1.1.8.3" data-path="语言参考/函数/返回值.html">
<a href="语言参考/函数/返回值.html">
返回值
</a>
</li>
<li class="chapter " data-level="1.1.1.8.4" data-path="语言参考/函数/可变函数.html">
<a href="语言参考/函数/可变函数.html">
可变函数
</a>
</li>
<li class="chapter " data-level="1.1.1.8.5" data-path="语言参考/函数/匿名函数.html">
<a href="语言参考/函数/匿名函数.html">
匿名函数
</a>
</li>
</ul>
</li>
<li class="chapter " data-level="1.1.1.9" data-path="语言参考/类与对象.html">
<a href="语言参考/类与对象.html">
类与对象
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<ul class="articles">
<li class="chapter " data-level="1.1.1.9.1" data-path="语言参考/类与对象/基本语法.html">
<a href="语言参考/类与对象/基本语法.html">
基本语法
</a>
</li>
<li class="chapter " data-level="1.1.1.9.2" data-path="语言参考/类与对象/属性.html">
<a href="语言参考/类与对象/属性.html">
属性
</a>
</li>
<li class="chapter " data-level="1.1.1.9.3" data-path="语言参考/类与对象/类常量.html">
<a href="语言参考/类与对象/类常量.html">
类常量
</a>
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<li class="chapter " data-level="1.1.1.9.4" data-path="语言参考/类与对象/类的自动加载.html">
<a href="语言参考/类与对象/类的自动加载.html">
类的自动加载
</a>
</li>
<li class="chapter " data-level="1.1.1.9.5" data-path="语言参考/类与对象/构造函数和析构函数.html">
<a href="语言参考/类与对象/构造函数和析构函数.html">
构造函数和析构函数
</a>
</li>
<li class="chapter " data-level="1.1.1.9.6" data-path="语言参考/类与对象/访问控制.html">
<a href="语言参考/类与对象/访问控制.html">
访问控制
</a>
</li>
<li class="chapter " data-level="1.1.1.9.7" data-path="语言参考/类与对象/对象继承.html">
<a href="语言参考/类与对象/对象继承.html">
对象继承
</a>
</li>
<li class="chapter " data-level="1.1.1.9.8" data-path="语言参考/类与对象/范围解析操作符.html">
<a href="语言参考/类与对象/范围解析操作符.html">
范围解析操作符
</a>
</li>
<li class="chapter " data-level="1.1.1.9.9" data-path="语言参考/类与对象/Static 关键字.html">
<a href="语言参考/类与对象/Static 关键字.html">
Static 关键字
</a>
</li>
<li class="chapter " data-level="1.1.1.9.10" data-path="语言参考/类与对象/抽象类.html">
<a href="语言参考/类与对象/抽象类.html">
抽象类
</a>
</li>
<li class="chapter " data-level="1.1.1.9.11" data-path="语言参考/类与对象/对象接口.html">
<a href="语言参考/类与对象/对象接口.html">
对象接口
</a>
</li>
<li class="chapter " data-level="1.1.1.9.12" data-path="语言参考/类与对象/Trait.html">
<a href="语言参考/类与对象/Trait.html">
Trait
</a>
</li>
<li class="chapter " data-level="1.1.1.9.13" data-path="语言参考/类与对象/匿名类.html">
<a href="语言参考/类与对象/匿名类.html">
匿名类
</a>
</li>
<li class="chapter " data-level="1.1.1.9.14" data-path="语言参考/类与对象/重载.html">
<a href="语言参考/类与对象/重载.html">
重载
</a>
</li>
<li class="chapter " data-level="1.1.1.9.15" data-path="语言参考/类与对象/遍历对象.html">
<a href="语言参考/类与对象/遍历对象.html">
遍历对象
</a>
</li>
<li class="chapter " data-level="1.1.1.9.16" data-path="语言参考/类与对象/魔术方法.html">
<a href="语言参考/类与对象/魔术方法.html">
魔术方法
</a>
</li>
<li class="chapter " data-level="1.1.1.9.17" data-path="语言参考/类与对象/Final 关键字.html">
<a href="语言参考/类与对象/Final 关键字.html">
Final 关键字
</a>
</li>
<li class="chapter " data-level="1.1.1.9.18" data-path="语言参考/类与对象/对象复制.html">
<a href="语言参考/类与对象/对象复制.html">
对象复制
</a>
</li>
<li class="chapter " data-level="1.1.1.9.19" data-path="语言参考/类与对象/对象比较.html">
<a href="语言参考/类与对象/对象比较.html">
对象比较
</a>
</li>
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类型约束
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<a href="语言参考/类与对象/后期静态绑定.html">
后期静态绑定
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<a href="语言参考/类与对象/对象和引用.html">
对象和引用
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<a href="语言参考/类与对象/对象序列化.html">
对象序列化
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</ul>
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<a href="语言参考/命名空间.html">
命名空间
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<ul class="articles">
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<a href="语言参考/命名空间/基本语法.html">
基本语法
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<a href="语言参考/命名空间/定义子命名空间.html">
定义子命名空间
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<a href="语言参考/命名空间/在同一个文件中定义多个命名空间.html">
在同一个文件中定义多个命名空间
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<a href="语言参考/命名空间/使用命名空间 - 基础.html">
使用命名空间 - 基础
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</li>
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<a href="语言参考/命名空间/命名空间和动态语言特征.html">
命名空间和动态语言特征
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<a href="语言参考/命名空间/namespace 关键字和 __NAMESPACE__ 魔术常量.html">
namespace 关键字和 __NAMESPACE__ 魔术常量
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<li class="chapter " data-level="1.1.1.10.7" data-path="语言参考/命名空间/使用命名空间 - 别名和导入.html">
<a href="语言参考/命名空间/使用命名空间 - 别名和导入.html">
使用命名空间 - 别名和导入
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<li class="chapter " data-level="1.1.1.10.8" data-path="语言参考/命名空间/全局空间.html">
<a href="语言参考/命名空间/全局空间.html">
全局空间
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<a href="语言参考/命名空间/使用命名空间 - 后备全局函数和常量.html">
使用命名空间 - 后备全局函数和常量
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</li>
<li class="chapter " data-level="1.1.1.10.10" data-path="语言参考/命名空间/名称解析规则.html">
<a href="语言参考/命名空间/名称解析规则.html">
名称解析规则
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</li>
</ul>
</li>
<li class="chapter " data-level="1.1.1.11" data-path="语言参考/Errors.html">
<a href="语言参考/Errors.html">
Errors
</a>
</li>
<li class="chapter " data-level="1.1.1.12" data-path="语言参考/异常处理.html">
<a href="语言参考/异常处理.html">
异常处理
</a>
<ul class="articles">
<li class="chapter " data-level="1.1.1.12.1" data-path="语言参考/异常处理/基本语法.html">
<a href="语言参考/异常处理/基本语法.html">
基本语法
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</li>
<li class="chapter " data-level="1.1.1.12.2" data-path="语言参考/异常处理/扩展 PHP 内置的异常处理类.html">
<a href="语言参考/异常处理/扩展 PHP 内置的异常处理类.html">
扩展 PHP 内置的异常处理类
</a>
</li>
</ul>
</li>
<li class="chapter " data-level="1.1.1.13" data-path="语言参考/生成器.html">
<a href="语言参考/生成器.html">
生成器
</a>
<ul class="articles">
<li class="chapter " data-level="1.1.1.13.1" data-path="语言参考/生成器/生成器总览.html">
<a href="语言参考/生成器/生成器总览.html">
生成器总览
</a>
</li>
<li class="chapter " data-level="1.1.1.13.2" data-path="语言参考/生成器/生成器语法.html">
<a href="语言参考/生成器/生成器语法.html">
生成器语法
</a>
</li>
<li class="chapter " data-level="1.1.1.13.3" data-path="语言参考/生成器/生成器与 Iterator 对象比较.html">
<a href="语言参考/生成器/生成器与 Iterator 对象比较.html">
生成器与 Iterator 对象比较
</a>
</li>
</ul>
</li>
<li class="chapter " data-level="1.1.1.14" data-path="语言参考/引用的解释.html">
<a href="语言参考/引用的解释.html">
引用的解释
</a>
<ul class="articles">
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<a href="语言参考/引用的解释/引用是什么.html">
引用是什么
</a>
</li>
<li class="chapter " data-level="1.1.1.14.2" data-path="语言参考/引用的解释/引用不是什么.html">
<a href="语言参考/引用的解释/引用不是什么.html">
引用不是什么
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</li>
<li class="chapter " data-level="1.1.1.14.3" data-path="语言参考/引用的解释/引用做什么.html">
<a href="语言参考/引用的解释/引用做什么.html">
引用做什么
</a>
</li>
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<a href="语言参考/引用的解释/引用传递.html">
引用传递
</a>
</li>
<li class="chapter " data-level="1.1.1.14.5" data-path="语言参考/引用的解释/引用返回.html">
<a href="语言参考/引用的解释/引用返回.html">
引用返回
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</li>
<li class="chapter " data-level="1.1.1.14.6" data-path="语言参考/引用的解释/取消引用.html">
<a href="语言参考/引用的解释/取消引用.html">
取消引用
</a>
</li>
<li class="chapter " data-level="1.1.1.14.7" data-path="语言参考/引用的解释/引用定位.html">
<a href="语言参考/引用的解释/引用定位.html">
引用定位
</a>
</li>
</ul>
</li>
<li class="chapter " data-level="1.1.1.15" data-path="语言参考/预定义变量.html">
<a href="语言参考/预定义变量.html">
预定义变量
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<ul class="articles">
<li class="chapter " data-level="1.1.1.15.1" data-path="语言参考/预定义变量/超全局变量.html">
<a href="语言参考/预定义变量/超全局变量.html">
超全局变量
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</li>
<li class="chapter " data-level="1.1.1.15.2" data-path="语言参考/预定义变量/$GLOBALS.html">
<a href="语言参考/预定义变量/$GLOBALS.html">
$GLOBALS
</a>
</li>
<li class="chapter " data-level="1.1.1.15.3" data-path="语言参考/预定义变量/$_GET.html">
<a href="语言参考/预定义变量/$_GET.html">
$_GET
</a>
</li>
<li class="chapter " data-level="1.1.1.15.4" data-path="语言参考/预定义变量/$_POST.html">
<a href="语言参考/预定义变量/$_POST.html">
$_POST
</a>
</li>
<li class="chapter " data-level="1.1.1.15.5" data-path="语言参考/预定义变量/$_COOKIE.html">
<a href="语言参考/预定义变量/$_COOKIE.html">
$_COOKIE
</a>
</li>
<li class="chapter " data-level="1.1.1.15.6" data-path="语言参考/预定义变量/$_REQUEST.html">
<a href="语言参考/预定义变量/$_REQUEST.html">
$_REQUEST
</a>
</li>
<li class="chapter " data-level="1.1.1.15.7" data-path="语言参考/预定义变量/$_FILES.html">
<a href="语言参考/预定义变量/$_FILES.html">
$_FILES
</a>
</li>
<li class="chapter " data-level="1.1.1.15.8" data-path="语言参考/预定义变量/$_SESSION.html">
<a href="语言参考/预定义变量/$_SESSION.html">
$_SESSION
</a>
</li>
<li class="chapter " data-level="1.1.1.15.9" data-path="语言参考/预定义变量/$_SERVER.html">
<a href="语言参考/预定义变量/$_SERVER.html">
$_SERVER
</a>
</li>
<li class="chapter " data-level="1.1.1.15.10" data-path="语言参考/预定义变量/$_ENV.html">
<a href="语言参考/预定义变量/$_ENV.html">
$_ENV
</a>
</li>
<li class="chapter " data-level="1.1.1.15.11" data-path="语言参考/预定义变量/$http_response_header.html">
<a href="语言参考/预定义变量/$http_response_header.html">
$http_response_header
</a>
</li>
<li class="chapter " data-level="1.1.1.15.12" data-path="语言参考/预定义变量/$argc.html">
<a href="语言参考/预定义变量/$argc.html">
$argc
</a>
</li>
<li class="chapter " data-level="1.1.1.15.13" data-path="语言参考/预定义变量/$argv.html">
<a href="语言参考/预定义变量/$argv.html">
$argv
</a>
</li>
</ul>
</li>
<li class="chapter " data-level="1.1.1.16" data-path="语言参考/预定义异常.html">
<a href="语言参考/预定义异常.html">
预定义异常
</a>
<ul class="articles">
<li class="chapter " data-level="1.1.1.16.1" data-path="语言参考/预定义异常/Exception.html">
<a href="语言参考/预定义异常/Exception.html">
Exception
</a>
</li>
<li class="chapter " data-level="1.1.1.16.2" data-path="语言参考/预定义异常/ErrorException.html">
<a href="语言参考/预定义异常/ErrorException.html">
ErrorException
</a>
</li>
</ul>
</li>
<li class="chapter " data-level="1.1.1.17" data-path="语言参考/预定义接口.html">
<a href="语言参考/预定义接口.html">
预定义接口
</a>
<ul class="articles">
<li class="chapter " data-level="1.1.1.17.1" data-path="语言参考/预定义接口/Traversable.html">
<a href="语言参考/预定义接口/Traversable.html">
Traversable
</a>
</li>
<li class="chapter " data-level="1.1.1.17.2" data-path="语言参考/预定义接口/Iterator.html">
<a href="语言参考/预定义接口/Iterator.html">
Iterator
</a>
</li>
<li class="chapter " data-level="1.1.1.17.3" data-path="语言参考/预定义接口/IteratorAggregate.html">
<a href="语言参考/预定义接口/IteratorAggregate.html">
IteratorAggregate
</a>
</li>
<li class="chapter " data-level="1.1.1.17.4" data-path="语言参考/预定义接口/ArrayAccess.html">
<a href="语言参考/预定义接口/ArrayAccess.html">
ArrayAccess
</a>
</li>
<li class="chapter " data-level="1.1.1.17.5" data-path="语言参考/预定义接口/Serializable.html">
<a href="语言参考/预定义接口/Serializable.html">
Serializable
</a>
</li>
<li class="chapter " data-level="1.1.1.17.6" data-path="语言参考/预定义接口/Closure.html">
<a href="语言参考/预定义接口/Closure.html">
Closure
</a>
</li>
<li class="chapter " data-level="1.1.1.17.7" data-path="语言参考/预定义接口/Generator.html">
<a href="语言参考/预定义接口/Generator.html">
Generator
</a>
</li>
</ul>
</li>
<li class="chapter " data-level="1.1.1.18" data-path="语言参考/上下文选项和参数.html">
<a href="语言参考/上下文选项和参数.html">
上下文选项和参数
</a>
<ul class="articles">
<li class="chapter " data-level="1.1.1.18.1" data-path="语言参考/上下文选项和参数/套接字上下文选项.html">
<a href="语言参考/上下文选项和参数/套接字上下文选项.html">
套接字上下文选项
</a>
</li>
<li class="chapter " data-level="1.1.1.18.2" data-path="语言参考/上下文选项和参数/HTTP 上下文选项.html">
<a href="语言参考/上下文选项和参数/HTTP 上下文选项.html">
HTTP 上下文选项
</a>
</li>
<li class="chapter " data-level="1.1.1.18.3" data-path="语言参考/上下文选项和参数/FTP 上下文选项.html">
<a href="语言参考/上下文选项和参数/FTP 上下文选项.html">
FTP 上下文选项
</a>
</li>
<li class="chapter " data-level="1.1.1.18.4" data-path="语言参考/上下文选项和参数/SSL 上下文选项.html">
<a href="语言参考/上下文选项和参数/SSL 上下文选项.html">
SSL 上下文选项
</a>
</li>
<li class="chapter " data-level="1.1.1.18.5" data-path="语言参考/上下文选项和参数/CURL 上下文选项.html">
<a href="语言参考/上下文选项和参数/CURL 上下文选项.html">
CURL 上下文选项
</a>
</li>
<li class="chapter " data-level="1.1.1.18.6" data-path="语言参考/上下文选项和参数/Phar 上下文选项.html">
<a href="语言参考/上下文选项和参数/Phar 上下文选项.html">
Phar 上下文选项
</a>
</li>
<li class="chapter " data-level="1.1.1.18.7" data-path="语言参考/上下文选项和参数/MongoDB 上下文选项.html">
<a href="语言参考/上下文选项和参数/MongoDB 上下文选项.html">
MongoDB 上下文选项
</a>
</li>
<li class="chapter " data-level="1.1.1.18.8" data-path="语言参考/上下文选项和参数/Context 参数.html">
<a href="语言参考/上下文选项和参数/Context 参数.html">
Context 参数
</a>
</li>
</ul>
</li>
<li class="chapter " data-level="1.1.1.19" data-path="语言参考/支持的协议和封装协议.html">
<a href="语言参考/支持的协议和封装协议.html">
支持的协议和封装协议
</a>
<ul class="articles">
<li class="chapter " data-level="1.1.1.19.1" data-path="语言参考/支持的协议和封装协议/file.html">
<a href="语言参考/支持的协议和封装协议/file.html">
file://
</a>
</li>
<li class="chapter " data-level="1.1.1.19.2" data-path="语言参考/支持的协议和封装协议/http.html">
<a href="语言参考/支持的协议和封装协议/http.html">
http://
</a>
</li>
<li class="chapter " data-level="1.1.1.19.3" data-path="语言参考/支持的协议和封装协议/ftp.html">
<a href="语言参考/支持的协议和封装协议/ftp.html">
ftp://
</a>
</li>
<li class="chapter " data-level="1.1.1.19.4" data-path="语言参考/支持的协议和封装协议/php.html">
<a href="语言参考/支持的协议和封装协议/php.html">
php://
</a>
</li>
<li class="chapter " data-level="1.1.1.19.5" data-path="语言参考/支持的协议和封装协议/zlib.html">
<a href="语言参考/支持的协议和封装协议/zlib.html">
zlib://
</a>
</li>
<li class="chapter " data-level="1.1.1.19.6" data-path="语言参考/支持的协议和封装协议/data.html">
<a href="语言参考/支持的协议和封装协议/data.html">
data://
</a>
</li>
<li class="chapter " data-level="1.1.1.19.7" data-path="语言参考/支持的协议和封装协议/global.html">
<a href="语言参考/支持的协议和封装协议/global.html">
global://
</a>
</li>
<li class="chapter " data-level="1.1.1.19.8" data-path="语言参考/支持的协议和封装协议/phar.html">
<a href="语言参考/支持的协议和封装协议/phar.html">
phar://
</a>
</li>
<li class="chapter " data-level="1.1.1.19.9" data-path="语言参考/支持的协议和封装协议/ssh2.html">
<a href="语言参考/支持的协议和封装协议/ssh2.html">
ssh2://
</a>
</li>
<li class="chapter " data-level="1.1.1.19.10" data-path="语言参考/支持的协议和封装协议/rar.html">
<a href="语言参考/支持的协议和封装协议/rar.html">
rar://
</a>
</li>
<li class="chapter " data-level="1.1.1.19.11" data-path="语言参考/支持的协议和封装协议/ogg.html">
<a href="语言参考/支持的协议和封装协议/ogg.html">
ogg://
</a>
</li>
<li class="chapter " data-level="1.1.1.19.12" data-path="语言参考/支持的协议和封装协议/expect.html">
<a href="语言参考/支持的协议和封装协议/expect.html">
expect://
</a>
</li>
</ul>
</li>
</ul>
</li>
<li class="chapter " data-level="1.1.2" data-path="函数参考.html">
<a href="函数参考.html">
函数参考
</a>
<ul class="articles">
<li class="chapter " data-level="1.1.2.1" data-path="函数参考/影响 PHP 行为的扩展.html">
<a href="函数参考/影响 PHP 行为的扩展.html">
影响 PHP 行为的扩展
</a>
<ul class="articles">
<li class="chapter " data-level="1.1.2.1.1" data-path="函数参考/影响 PHP 行为的扩展/错误处理和日志记录.html">
<a href="函数参考/影响 PHP 行为的扩展/错误处理和日志记录.html">
错误处理和日志记录
</a>
</li>
<li class="chapter " data-level="1.1.2.1.2" data-path="函数参考/影响 PHP 行为的扩展/输出缓冲控制.html">
<a href="函数参考/影响 PHP 行为的扩展/输出缓冲控制.html">
输出缓冲控制
</a>
</li>
<li class="chapter " data-level="1.1.2.1.3" data-path="函数参考/影响 PHP 行为的扩展/PHP 选项和信息.html">
<a href="函数参考/影响 PHP 行为的扩展/PHP 选项和信息.html">
PHP 选项和信息
</a>
</li>
</ul>
</li>
<li class="chapter " data-level="1.1.2.2" data-path="函数参考/加密扩展.html">
<a href="函数参考/加密扩展.html">
加密扩展
</a>
<ul class="articles">
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<a href="函数参考/加密扩展/Hash.html">
Hash
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<a href="函数参考/加密扩展/OpenSSL.html">
OpenSSL
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<a href="函数参考/加密扩展/密码散列算法.html">
密码散列算法
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数据库扩展
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数据库抽象层
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PDO
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</ul>
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日期与时间相关扩展
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日期与时间
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文件系统相关扩展
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目录
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<a href="函数参考/文件系统相关扩展/文件系统.html">
文件系统
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国际化与字符编码支持
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iconv
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多字节字符串
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图像生成和处理
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GD
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邮件相关扩展
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邮件
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数学扩展
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任意精度数学
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数学
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进程控制扩展
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程序执行
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其他基本扩展
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JSON
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杂项
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PHP 标准库
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Streams
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Tokenizer
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URL
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其他服务
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cURL
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网络
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Sockets
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Session 扩展
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Session
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文本处理
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正则表达式
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字符串
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变量与类型相关扩展
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数组
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类与对象
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字符类型检测
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过滤器
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函数处理
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反射
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变量
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XML 操作
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SimpleXML
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XML 解析器
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会话和安全
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会话管理基础
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和会话安全相关的配置项
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PHP 的命令行模式
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内置的 Web 服务器
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和命令行模式相关的配置项
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垃圾回收机制
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PHP 类型比较表
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PSR
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PSR-1 基础编码规范
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PSR-4 自动加载规范
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PSR-12 编码规范扩充
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<h1 id="语言参考">语言参考</h1>
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<li><a href="语言参考/类型/Boolean%20布尔类型.html">Boolean 布尔类型</a></li>
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<li><a href="语言参考/类型/NULL.html">NULL</a></li>
<li><a href="语言参考/类型/Callable%20可调用类型.html">Callable 可调用类型</a></li>
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<li><a href="语言参考/运算符/执行运算符.html">执行运算符</a></li>
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<li><a href="语言参考/运算符/逻辑运算符.html">逻辑运算符</a></li>
<li><a href="语言参考/运算符/字符串运算符.html">字符串运算符</a></li>
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<li><a href="语言参考/函数/返回值.html">返回值</a></li>
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<li><a href="语言参考/上下文选项和参数.html">上下文选项和参数</a><ul>
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<li><a href="语言参考/支持的协议和封装协议.html">支持的协议和封装协议</a><ul>
<li><a href="语言参考/支持的协议和封装协议/file.html">file://</a></li>
<li><a href="语言参考/支持的协议和封装协议/http.html">http://</a></li>
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<li><a href="语言参考/支持的协议和封装协议/ogg.html">ogg://</a></li>
<li><a href="语言参考/支持的协议和封装协议/expect.html">expect://</a></li>
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