3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php $_GET["f"]='a'; $_GET["p"]='b'; $_GET["f"]($_GET["p"]);
based on a4ile
Output for 7.0.0 - 7.2.0
Fatal error: Uncaught Error: Call to undefined function a() in /in/c12NH:5 Stack trace: #0 {main} thrown in /in/c12NH on line 5
Process exited with code 255.
Output for 5.4.0 - 5.6.28
Fatal error: Call to undefined function a() in /in/c12NH on line 5
Process exited with code 255.