3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php $a = range(1, 1000); var_dump(array_change_keys($a, function ($k, $v) { return md5($v); }));
Output for 7.0.0 - 7.3.1
Fatal error: Uncaught Error: Call to undefined function array_change_keys() in /in/3vdas:5 Stack trace: #0 {main} thrown in /in/3vdas on line 5
Process exited with code 255.
Output for 5.5.0 - 5.6.28
Fatal error: Call to undefined function array_change_keys() in /in/3vdas on line 5
Process exited with code 255.