Bug #66961 [Ver->Nab]: get_object_vars() returns object references

Edit report at https://bugs.php.net/bug.php?id=66961&edit=1 ID: 66961 Updated by: jhdxr@php.net Reported by: thomas dot stavang dot pedersen at gmail dot com Summary: get_object_vars() returns object references -Status: Verified +Status: Not a bug Type: Bug Package: Unknown/Other Function Operating System: Linux, Fedora 19 PHP Version: 5.5.10 Block user comment: N Private report: N New Comment: Thank you for taking the time to write to us, but this is not a bug. Please double-check the documentation available at http://www.php.net/manual/ and the instructions on how to report a bug at http://bugs.php.net/how-to-report.php this behavior is expected, it's how reference works in PHP. the problem here is not related to get_object_vars(). it's caused by $this->far = &$this->bar;. this will make both ->far and ->bar referenced. You can see there is an & before object in the var_dump output. similar results can be found when you use array (see https://3v4l.org/shrkT). Previous Comments: ------------------------------------------------------------------------ [2014-07-06 01:50:27] yohgaki@php.net http://3v4l.org/H7h4N It seems PHP does changes value while HHVM does not. ------------------------------------------------------------------------ [2014-03-26 14:30:16] thomas dot stavang dot pedersen at gmail dot com Description: ------------ get_object_vars() returns an array which can be manipulated as you would using a normal object. Manipulating the resulting array should not manipulate the object itself, but it does in this case. Test script: --------------- class Foo { public $bar = null; public function __construct() { $this->bar = new DateTime(); // Now $this->far = &$this->bar; } } $foo= new Foo(); var_dump($foo); $vars = get_object_vars($foo); $vars['bar'] = new DateTime('2014-03-25'); var_dump($foo); Expected result: ---------------- $foo->bar should not be altered, as we are only changing the get_object_vars() array, but it is. Actual result: -------------- $foo->bar (and $foo->far) gets a new value. ------------------------------------------------------------------------ -- Edit this bug report at https://bugs.php.net/bug.php?id=66961&edit=1