Which category does php's __call function belong to?-PHP Problem-php.cn

php's __call() function is a magic function. The so-called PHP magic function simply means that it has a specific name in PHP - all starting with two underscores, and the PHP interpreter will A method to automatically find and run when a certain timing is reached.

Which category does php's __call function belong to?

When we call an inaccessible member method, the __call magic method will be called.

No The accessed member method refers to (1. The member method does not exist, 2. The member method is protected or private) (Recommended learning:PHP Video Tutorial)

We just hope that in Directly call inaccessible member methods (private, protected) from outside the class.

Case Description

name = $name; $this->hobby = $hobby; } //输出该对象的信息 public function showInfo(){ echo '
 名字是 ' . $this->name; foreach($this->hobby as $hobby){ echo '
 爱好有 ' . $hobby; } } //会做算术题, 保护的 protected function getSum($num1, $num2){ return $num1 + $num2; } //编写这个__call魔术方法， __call 魔术方法会接收到两个参数 /* @param $method_name 就是函数名 @param $parameters 就是参数，类型是array */ public function __call($method_name, $parameters){ // echo '
 method_name = ' . $method_name; // echo '
 $parameters 
'; // var_dump($parameters); //判断 $this 中是否有 $method_name 函数，有就返回true,否则返回false if(method_exists($this, $method_name)){ return $this->$method_name($parameters[0], $parameters[1]); }else{ return '没有你要调用的函数'; } } } $monk = new Monk('济公', array('no1'=>'腾云驾雾', 'no2'=>'喝酒')); $monk->showInfo(); //当我们直接调用 protected 方法时，就会触发 __call 魔术方法 echo '
 结果是' . $monk->getSum(100, 200);

Copy after login

The above is the detailed content of Which category does php's __call function belong to?. For more information, please follow other related articles on the PHP Chinese website!