3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php function reverse($str) { if (strlen($str) < 2) { return $str; } return reverse(substr($str, 1)) . $str[0]; } $txt = "Thomas"; echo rev($txt);
based on ERfcQ
Output for 7.0.0 - 7.2.0
Fatal error: Uncaught Error: Call to undefined function rev() in /in/UXAOA:13 Stack trace: #0 {main} thrown in /in/UXAOA on line 13
Process exited with code 255.
Output for 5.3.19 - 5.6.28
Fatal error: Call to undefined function rev() in /in/UXAOA on line 13
Process exited with code 255.