在V2EX上看到的一道面试题

gistfile1.aw

<?php
class MagicObject{
	
	private $p = array();
	
	public function __set($name,$value){
		$this->p[$name] = $value;
	}
	
	public function __get($name){
		if(isset($this->p[$name]))return $this->p[$name];
		return FALSE;
	}
	
	public function __call($name,$aug){//$aug是数组
		if(method_exists($this,$name))return $this->$name($aug);
		if(isset($this->p[$name]) && is_callable($this->p[$name])){
			//if($name == 'isOwnerTo')return $this->p[$name]($this,$aug[0]);
			//@gee 的方法更好一些...
			array_unshift($aug,$this);
			return call_user_func_array($this->p[$name],$aug);
		}
		return FALSE;
	}
}

$user = new MagicObject;
$user->isOwnerTo = function ($self, $car) {
return ($self->id == $car->owner_id);
};

$car = new StdClass;
$car->owner_id;
$car->owner_id = 1;
$user->id = 1;

assert($user->isOwnerTo($car));