PHP 常见的魔术方法

 

 

__get()   / __set()   ———————— 　　主要用来接管对象的属性

<?php

namespace Bpp;

class Object
{
    protected $arr = [];

    public function __get($key)
    {

        return $this->arr[$key];
    }

    public function __set($key , $value)
    {
        $this->arr[$key] = $value;
        return 'ok';
    }
}


$object = new Object();

echo $object->title="hello";
echo $object->title;

 

 

__call  __callStatic    ————————   控制方法调用

class Object
{
    protected $arr = [];

    public function __get($key)
    {
        return $this->arr[$key];
    }

    public function __set($key , $value)
    {
        $this->arr[$key] = $value;
    }

    public function __call($func, $params)
    {
        var_dump($func , $params);
        echo "you call funcname is $func ";
    }

    public static function __callStatic($name, $arguments)
    {

        echo "call static function name is $name";
    }

}

$object = new Object();
$object->hello('lufy','12age');
$object::say();

 

 

__toString()  ————————————  转化对象为字符串

<?php


    class Object
    {
        protected $arr = [];
        
        public function __get($key)
        {

            return $this->$arr[$key];
        }
    
        public function __set($key , $value)
        {
            $this->$arr[$key] = $value;
            return 'ok';
        }

        public function __toString()
        {
                return __CLASS__;
        }

    }


    $obj = new object();
    echo $obj;

 

 

 

__invoke()  　　 ——————————————　　将字符串当作函数来执

<?php


    class Object
    {
        protected $arr = [];
        
        public function __get($key)
        {

            return $this->$arr[$key];
        }
    
        public function __set($key , $value)
        {
            $this->$arr[$key] = $value;
            return 'ok';
        }

        public function __toString()
        {
                return __CLASS__;
        }

        public function sayHi()
        {
            echo 'sayHi';
        }

        public function __invoke($param)
        {
            var_dump($param);
        }

    }


    $obj = new Object();

$obj("hello");