[PHP知识库]php的ReflecctionClass反射调用

<?php
class Person{
	public $name;
	function __construct($name){
		$this->name=$name;
	}
}
interface Module{
	function execute();
}
class FtpModule implements Module{
	function setHost($host){
		print "FtpModule::setHost():$host\n<br/>";
	}
	function setUser($user){
		print "FtpModule::setUser():$user\n<br/>";
	}
	function execute(){
		print 'hello';
	}
}
class PersonModule implements Module{
	function setPerson(Person $person){
		print "PersonModule::setPerson():{$person->name}\n<br/>";
	}
	function execute(){
		print 'world';
	}
}
class ModuleRunner{
	private $configData=array(
		"PersonModule"=>array('person'=>'bob'),
		"FtpModule"=>array('host'=>'example.com','user'=>'anon')
	);
	private $modules=array();
	function init(){
		$interface=new ReflectionClass('Module');
		foreach($this->configData as $modulename=>$params){
			$module_class=new ReflectionClass($modulename);
			if(!$module_class->isSubclassOf($interface)){
				throw new Exception("未知的类：$modulename");
			}
			$module=$module_class->newInstance();
			foreach($module_class->getMethods() as $method){
				$this->handMethod($module,$method,$params);
			}
			array_push($this->modules,$module);
		}
	}
	function handMethod(Module $module,ReflectionMethod $method,$params){
		$name=$method->getName();
		$args=$method->getParameters();
		if(count($args)!=1 || substr($name,0,3)!='set'){
			return false;
		}
		$property=strtolower(substr($name,3));
		if(!isset($params[$property])){
			return false;
		}
		$arg_class=$args[0]->getClass();
		if(empty($arg_class)){
			$method->invoke($module,$params[$property]);
		}else{
			$method->invoke($module,$arg_class->newInstance($params[$property]));
		}
	}
}
$re=new ModuleRunner();
$re->init();
?>