php提供实现反射的方法和实例代码

<?php 

namespace Extend;

 

use ReflectionClass;

use Exception;

 

/

  用户相关类

  Class User

  @package Extend

 /

class User{

  const ROLE = 'Students';

  public $username = '';

  private $password = '';

 

  public function __construct($username, $password)

  {

    $this->username = $username;

    $this->password = $password;

  }

 

  /

    获取用户名

    @return string

   /

  public function getUsername()

  {

    return $this->username;

  }

 

  /

    设置用户名

    @param string $username

   /

  public function setUsername($username)

  {

    $this->username = $username;

  }

 

  /

    获取密码

    @return string

   /

  private function getPassword()

  {

    return $this->password;

  }

 

  /

    设置密码

    @param string $password

   /

  private function setPassowrd($password)

  {

    $this->password = $password;

  }

}

 

$class = new ReflectionClass('Extend\User'); // 将类名User作为参数，即可建立User类的反射类

$properties = $class->getProperties(); // 获取User类的所有属性，返回ReflectionProperty的数组

$property = $class->getProperty('password'); // 获取User类的password属性ReflectionProperty

$methods = $class->getMethods();  // 获取User类的所有方法，返回ReflectionMethod数组

$method = $class->getMethod('getUsername'); // 获取User类的getUsername方法的ReflectionMethod

$constants = $class->getConstants();  // 获取所有常量，返回常量定义数组

$constant = $class->getConstant('ROLE');  // 获取ROLE常量

$namespace = $class->getNamespaceName(); // 获取类的命名空间

$ment_class = $class->getDocComment(); // 获取User类的注释文档，即定义在类之前的注释

$ment_method = $class->getMethod('getUsername')->getDocComment(); // 获取User类中getUsername方法的注释文档