语言参考

基本语法
类型
变量
常量
- 语法
- 魔术常量
表达式
运算符
控制结构
函数
类与对象（PHP 4）
类与对象（PHP 5）
命名空间
异常处理
- 扩展 PHP 内置的异常处理类
引用的解释
Predefined variables
- Superglobals — Superglobals are built-in variables that are always available in all scopes
- $GLOBALS — References all variables available in global scope
- $_SERVER — Server and execution environment information
- $_GET — HTTP GET variables
- $_POST — HTTP POST variables
- $_FILES — HTTP File Upload variables
- $_REQUEST — HTTP Request variables
- $_SESSION — Session variables
- $_ENV — Environment variables
- $_COOKIE — HTTP Cookies
- $php_errormsg — The previous error message
- $HTTP_RAW_POST_DATA — Raw POST data
- $http_response_header — HTTP response headers
- $argc — The number of arguments passed to script
- $argv — Array of arguments passed to script
Predefined Exceptions
- Exception
- ErrorException
Predefined Interfaces
- Traversable — The Traversable interface
- Iterator — The Iterator interface
- IteratorAggregate — The IteratorAggregate interface
- ArrayAccess — The ArrayAccess interface
- Serializable — The Serializable interface
Context options and parameters
- Socket context options — Socket context option listing
- HTTP context options — HTTP context option listing
- FTP context options — FTP context option listing
- SSL context options — SSL context option listing
- CURL context options — CURL context option listing
- Phar context options — Phar context option listing
- Context parameters — Context parameter listing