<?php
class Person {  
	/** 
     * 注释：person的属性id
     */ 
    private $id = 0;
 
    /** type=varchar length=255 null */
    protected $name = "new born";
 
    /** type=text null */
    public $biography;
	
	public function __construct($id, $name)
	{
		$this->id = $id;
		$this->name = $name;
	}
 
	public function getId()
	{
		return $this->id;
	}
	public function setId($v)
	{
		$this->id = $v;
	}
	public function getName()
	{
		return $this->name;
	}
	public function setName($v)
	{
		$this->name = $v;
	}
	public function getBiography()
	{
		return $this->biography;
	}
	public function setBiography($v)
	{
		$this->biography = $v;
	}
}

//构造实例化--------------------------------------------------------------

//建立Person这个类的反射类  
$reflector = new ReflectionClass('Person');
//实例化Person类对象，根据构造函数传递参数
$instance = $reflector->newInstanceArgs(array(100,"shenbowei"));
//输出:id:100 name:shenbowei
echo "id:".$instance->getId()." name:".$instance->getName()."\n";
//或者可以这样调用方法
//获取Person类中的getName方法
$getNameMethod=$reflector->getmethod('getName'); 
//传入实例$instance，调用对应方法。输出：name:shenbowei   
echo "name:".$getNameMethod->invoke($instance)."\n";

//获取Person类的构造函数
$construtor = $reflector->getConstructor();
//获取函数方法需要的参数array
$denpendencies = $construtor->getParameters();
/*输出：
array(2) {
  [0]=>
  &object(ReflectionParameter)#4 (1) {
    ["name"]=>
    string(2) "id"
  }
  [1]=>
  &object(ReflectionParameter)#5 (1) {
    ["name"]=>
    string(4) "name"
  }
}
*/
var_dump($denpendencies);
/*上例的输出为两个NULL，为了测试，我在构造函数的第一个参数$id前加上类型限制为Person对象，则会输出如下：
object(ReflectionClass)#5 (1) {
  ["name"]=>
  string(6) "Person"
}
NULL
*/
foreach($denpendencies as $parameter)
{
	//如果没有限定参数类型为具体一个类的对象，则会输出NULL
	var_dump($parameter->getClass());
}

//获取属性--------------------------------------------------------------

//获取Person类的所有属性，不限定访问控制
$properties = $reflector->getProperties();  
/*输出：
id
name
biography
*/
foreach($properties as $property) {  
    echo $property->getName()."\n";  
}
//如果只要获取public和protect的属性
/*
ReflectionProperty::IS_STATIC
ReflectionProperty::IS_PUBLIC
ReflectionProperty::IS_PROTECTED
ReflectionProperty::IS_PRIVATE
*/
$without_private_properties = $reflector->getProperties(ReflectionProperty::IS_PUBLIC|ReflectionProperty::IS_PROTECTED);
/*输出：
name
biography
*/
foreach($without_private_properties as $property) {  
    echo $property->getName()."\n";  
}

//获取注释--------------------------------------------------------------

/*
输出：varchar
*/
foreach($properties as $property) {  
    if($property->isProtected()) {  
        $docblock = $property->getDocComment();  
		preg_match('/type\=([a-z_]*)/', $docblock, $matches);  
        echo $matches[1]."\n";
    }  
} 

//获取方法--------------------------------------------------------------
/*和getProperties方法类似，可以添加如下的filter作为参数：
ReflectionMethod::IS_STATIC
ReflectionMethod::IS_PUBLIC
ReflectionMethod::IS_PROTECTED
ReflectionMethod::IS_PRIVATE
ReflectionMethod::IS_ABSTRACT 
ReflectionMethod::IS_FINAL
*/
$methods = $reflector->getMethods(); 
/*输出：
__construct
getId
setId
getName
setName
getBiography
setBiography
*/
foreach($methods as $method) {  
    echo $method->getName()."\n";  
}