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A simple tutorial
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Classes and Objects
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Errors
Exceptions
Fibers
Generators
Attributes
References Explained
Predefined Variables
Predefined Exceptions
Predefined Interfaces and Classes
Predefined Attributes
Context options and parameters
Supported Protocols and Wrappers
Security
Introduction
General considerations
Installed as CGI binary
Installed as an Apache module
Session Security
Filesystem Security
Database Security
Error Reporting
User Submitted Data
Hiding PHP
Keeping Current
Features
HTTP authentication with PHP
Cookies
Sessions
Dealing with XForms
Handling file uploads
Using remote files
Connection handling
Persistent Database Connections
Command line usage
Garbage Collection
DTrace Dynamic Tracing
Function Reference
Affecting PHP's Behaviour
Audio Formats Manipulation
Authentication Services
Command Line Specific Extensions
Compression and Archive Extensions
Cryptography Extensions
Database Extensions
Date and Time Related Extensions
File System Related Extensions
Human Language and Character Encoding Support
Image Processing and Generation
Mail Related Extensions
Mathematical Extensions
Non-Text MIME Output
Process Control Extensions
Other Basic Extensions
Other Services
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Text Processing
Variable and Type Related Extensions
Web Services
Windows Only Extensions
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预定义常量 »
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预定义类
本节列出标准的预定义类。各种扩展库定义了其它类,其说明在各自的参考文档中。
标准类
这些类由一些内建在 PHP 中的标准函数定义。
Directory
由
dir()
创建。
stdClass
使用
类型转换为对象
或者各种标准函数创建的通用空类。
__PHP_Incomplete_Class
可能由
unserialize()
创建。
Exception
ErrorException
php_user_filter
Closure
预定义的 final 类
Closure
,它可以用于实现
匿名函数
。
Generator
预定义的 final 类
Generator
,它可以用于实现
生成器
。
ArithmeticError
AssertionError
DivisionByZeroError
Error
Throwable
ParseError
TypeError
特殊的类
以下这些标识符由于它们有特殊的用处,因此不可作为类名
self
当前类
。
static
运行时的当前类
。
parent
父级类
。
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