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<?php class EmptyObj{ protected function __construct(){} public static function get(){ static $obj; if(!$obj) $obj = new EmptyObj; return $obj; } public function __call($n, $a){ return $this; } public function __toString(){ return ''; } } class SomeClass{ public $image; public function __construct(){ $this->image = EmptyObj::get(); }} $a = new SomeClass; echo $a->image->oopsForgotToSetImage(); // E_NOTICE will be thrown echo $a->image->oopsForgotToSetImage()->expectProperty; echo $a->image->ExecSomeFnWithExpectedObject()->getSomethingFromObj();
Output for git.master, git.master_jit, rfc.property-hooks
Warning: Undefined property: EmptyObj::$expectProperty in /in/HUfUO on line 25

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