The Magic Method of PHP

1. __get/__set: Takeover of object properties
2, __call/__callstatic: Control the use of Php object method
3. __tostring: Convert PHP objects to strings
4, __invoke: A PHP object as a function to the implementation of the method back and forth

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;
    }
}

$OBJ = new Object ();

$OBJ->title = "Hello";//When you assign a value to a property that does not exist for an object, it automatically invokes the __set method

echo $OBJ->title;//to read a property that does not exist for an object, it automatically invokes the __get method

echo $Obj->test ("Hello", "123"); The __call method is automatically invoked when a method that does not exist for an object is invoked

echo $OBJ:: Test1 ("Hello1", "1234"); The __callstatic method is automatically invoked when a static method that does not exist for an object is invoked

echo $Obj;//When an object is output directly (because the object cannot be output directly), the __tostring method is automatically invoked to convert the object to a string

echo $Obj ("Hello");//When an object is used as a function, the __invoke method is automatically invoked