3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php function setifexists(&$var, $default = null) { if (!isset($var)) { $var = $default; } } setifexists($nonsense, true); var_dump($nonsense); $me = false; setifexists($me, true); var_dump($me);
based on n6t6n
Output for 4.3.0 - 5.6.28, hhvm-3.12.0, 7.0.0 - 7.1.0
bool(true) bool(false)
Output for hhvm-3.10.0

Process exited with code 153.