PHP反射API
反射的理解
它是指在php的运行状态中,扩展分析php程序,导出或者提取出关于类、方法、属性、参数等详细信息,甚至包括注释。这种动态获取的信息以及动态调用对象的方法的功能称为反射API。反射是操纵面向对象模型中元模型的API,其功能十分强大,可以帮助我们构建复杂,可扩展的应用。(ps:包括在工厂模式中的使用)
反射API是php内建的oop技术扩展,包括一些类、异常和接口,综合使用他们可用来帮助我们分析其它类,接口,方法,属性和扩展。这些oop扩展被称为反射。
ReflectionClass
[php]
class ReflectionClass implements Reflector
{
final private __clone()
public object __construct(string name)
public string __toString()
public static string export()
//导出该类的详细信息
public string getName()
//取得类名或接口名
public bool isInternal()
//测试该类是否为系统内部类
public bool isUserDefined()
//测试该类是否为用户自定义类
public bool isInstantiable()
//测试该类是否被实例化过
public bool hasConstant(string name)
//测试该类是否有特定的常量
public bool hasMethod(string name)
//测试该类是否有特定的方法
public bool hasProperty(string name)
//测试该类是否有特定的属性
public string getFileName()
//取得定义该类的文件名,包括路径名
public int getStartLine()
//取得定义该类的开始行
public int getEndLine()
//取得定义该类的结束行
public string getDocComment()
//取得该类的注释
public ReflectionMethod getConstructor()
//取得该类的构造函数信息
public ReflectionMethod getMethod(string name)
//取得该类的某个特定的方法信息
public ReflectionMethod[] getMethods()
//取得该类的所有的方法信息
public ReflectionProperty getProperty(string name)
//取得某个特定的属性信息
public ReflectionProperty[] getProperties()
//取得该类的所有属性信息
public array getConstants()
//取得该类所有常量信息
public mixed getConstant(string name)
//取得该类特定常量信息
public ReflectionClass[] getInterfaces()
//取得接口类信息
public bool isInterface()
//测试该类是否为接口
public bool isAbstract()
//测试该类是否为抽象类
public bool isFinal()
//测试该类是否声明为final
public int getModifiers()
//取得该类的修饰符,返回值类型可能是个资源类型
//通过Reflection::getModifierNames($class->getModifiers())进一步读取
public bool isInstance(stdclass object)
//测试传入的对象是否为该类的一个实例
public stdclass newInstance(mixed* args)
//创建该类实例
public ReflectionClass getParentClass()
//取得父类
public bool isSubclassOf(ReflectionClass class)
//测试传入的类是否为该类的父类
public array getStaticProperties()
//取得该类的所有静态属性
public mixed getStaticPropertyValue(string name [, mixed default])
//取得该类的静态属性值,若private,则不可访问
public void setStaticPropertyValue(string name, mixed value)
//设置该类的静态属性值,若private,则不可访问,有悖封装原则
public array getDefaultProperties()
//取得该类的属性信息,不含静态属性
public bool isIterateable()
public bool implementsInterface(string name)
//测试是否实现了某个特定接口
public ReflectionExtension getExtension()
public string getExtensionName()
}
?>
工厂模式应用:
[php]
class MoveDataFactory
{
/**
* Description:简单工厂模式,根据mode选取不同实例化对象
* @return 对象实例
*/
public function GetMoveClass($classname)
{
$reflectionclass = new ReflectionClass($classname);
return $reflectionclass->newInstance();
}
}

Hot AI Tools

Undresser.AI Undress
AI-powered app for creating realistic nude photos

AI Clothes Remover
Online AI tool for removing clothes from photos.

Undress AI Tool
Undress images for free

Clothoff.io
AI clothes remover

AI Hentai Generator
Generate AI Hentai for free.

Hot Article

Hot Tools

Notepad++7.3.1
Easy-to-use and free code editor

SublimeText3 Chinese version
Chinese version, very easy to use

Zend Studio 13.0.1
Powerful PHP integrated development environment

Dreamweaver CS6
Visual web development tools

SublimeText3 Mac version
God-level code editing software (SublimeText3)

Hot Topics



PHP 8.4 brings several new features, security improvements, and performance improvements with healthy amounts of feature deprecations and removals. This guide explains how to install PHP 8.4 or upgrade to PHP 8.4 on Ubuntu, Debian, or their derivati

Visual Studio Code, also known as VS Code, is a free source code editor — or integrated development environment (IDE) — available for all major operating systems. With a large collection of extensions for many programming languages, VS Code can be c

This tutorial demonstrates how to efficiently process XML documents using PHP. XML (eXtensible Markup Language) is a versatile text-based markup language designed for both human readability and machine parsing. It's commonly used for data storage an

If you are an experienced PHP developer, you might have the feeling that you’ve been there and done that already.You have developed a significant number of applications, debugged millions of lines of code, and tweaked a bunch of scripts to achieve op

JWT is an open standard based on JSON, used to securely transmit information between parties, mainly for identity authentication and information exchange. 1. JWT consists of three parts: Header, Payload and Signature. 2. The working principle of JWT includes three steps: generating JWT, verifying JWT and parsing Payload. 3. When using JWT for authentication in PHP, JWT can be generated and verified, and user role and permission information can be included in advanced usage. 4. Common errors include signature verification failure, token expiration, and payload oversized. Debugging skills include using debugging tools and logging. 5. Performance optimization and best practices include using appropriate signature algorithms, setting validity periods reasonably,

A string is a sequence of characters, including letters, numbers, and symbols. This tutorial will learn how to calculate the number of vowels in a given string in PHP using different methods. The vowels in English are a, e, i, o, u, and they can be uppercase or lowercase. What is a vowel? Vowels are alphabetic characters that represent a specific pronunciation. There are five vowels in English, including uppercase and lowercase: a, e, i, o, u Example 1 Input: String = "Tutorialspoint" Output: 6 explain The vowels in the string "Tutorialspoint" are u, o, i, a, o, i. There are 6 yuan in total

Static binding (static::) implements late static binding (LSB) in PHP, allowing calling classes to be referenced in static contexts rather than defining classes. 1) The parsing process is performed at runtime, 2) Look up the call class in the inheritance relationship, 3) It may bring performance overhead.

What are the magic methods of PHP? PHP's magic methods include: 1.\_\_construct, used to initialize objects; 2.\_\_destruct, used to clean up resources; 3.\_\_call, handle non-existent method calls; 4.\_\_get, implement dynamic attribute access; 5.\_\_set, implement dynamic attribute settings. These methods are automatically called in certain situations, improving code flexibility and efficiency.
