1、__get/__set:对对象属性的接管
2、__call/__callStatic:控制php对象方法的使用
3、__toString:将php对象转换成字符串
4、__invoke:将一个php对象当成函数来执行时来回调这个方法
<code>class Object { protected $array = array(); function __set($key,$value) { var_dump(__METHOD__); $this->array[$key] = $value; } function __get($key) { var_dump(__METHOD__); return $this->array[$key]; } function __call($func,$param) { var_dump($func,$param); return magic mathod __call; } static function __callStatic($func,$param) { var_dump($func,$param); return magic mathod __callStatic; } function __toString() { return __toString; } function __invoke($param) { var_dump($param); return invoke; } } </code>
$Obj = new Object();
$Obj->title = “你好”;//当对一个对象不存在的属性赋值的时候,它就会自动调用__set方法
echo $Obj->title;//对去读取一个对象不存在的属性的时候,它就会自动调用__get方法
echo $Obj->test(“hello”,”123”); //当调用一个对象不存在的方法时,就会自动调用__call方法
echo $Obj::test1(“hello1”,”1234”); //当调用一个对象不存在的静态方法时,就会自动调用__callStatic方法
echo $Obj;//当直接输出一个对象时(因为对象不能直接输出),就会自动调用__toString方法把对象转换成字符串
echo $Obj(“hello”);//当将一个对象当成一个函数来使用的时候,就会自动调用__invoke方法

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