3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php class foo { function bar() { $x = array(); echo $x['self::xx']; } } $a = new foo; $a->bar();
Output for 5.5.0 - 5.6.28, hhvm-3.10.0 - 3.12.0, 7.0.0 - 7.1.0
Notice: Undefined index: self::xx in /in/7CT7Y on line 5
Output for 4.3.0 - 5.4.45