3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php class a { function __construct() { $a = &$this; $a = $GLOBALS['a']; var_dump($this); } } $a = new a();
Output for 7.1.0
Notice: Undefined index: a in /in/fjUsF on line 8 object(a)#1 (0) { }
Output for 5.3.0 - 5.6.28, 7.0.0 - 7.0.14
Notice: Undefined index: a in /in/fjUsF on line 8 NULL
Output for hhvm-3.10.0 - 3.12.0
NULL
Output for 5.0.0 - 5.2.17
Notice: Undefined index: a in /in/fjUsF on line 8 NULL
Output for 4.3.0 - 4.4.9