3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php class a { public static $NNN = array(1); public static $d = 1; public static $b = self::d; } $x = 'N'; print_r(a::${'NN'.$x});
based on jouII
Output for 7.0.0 - 7.2.0
Fatal error: Uncaught Error: Undefined class constant 'self::d' in /in/o7W7O:9 Stack trace: #0 {main} thrown in /in/o7W7O on line 9
Process exited with code 255.
Output for 5.3.19 - 5.6.28
Fatal error: Undefined class constant 'self::d' in /in/o7W7O on line 9
Process exited with code 255.