3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php @$undef; @xdebug_debug_zval('undef'); @debug_zval_dump ( $undef ); $undef = "defined"; debug_zval_dump($undef);
based on caGD6
Output for 7.0.0 - 7.2.0
Fatal error: Uncaught Error: Call to undefined function xdebug_debug_zval() in /in/LvrH0:4 Stack trace: #0 {main} thrown in /in/LvrH0 on line 4
Process exited with code 255.
Output for 4.3.2 - 5.6.28

Process exited with code 255.
Output for 4.3.0 - 4.3.1