3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php $b = [1, 2, 3]; foreach($b ?? [] as &$v){ $v = $v*2; unset($v); } var_dump($b);
based on 3YEZZ
Output for 7.0.0 - 7.2.0
array(3) { [0]=> int(1) [1]=> int(2) [2]=> int(3) }
Output for 5.4.9 - 5.6.28
Parse error: syntax error, unexpected '?' in /in/UiZBF on line 5
Process exited with code 255.
Output for 5.3.19 - 5.3.29
Parse error: syntax error, unexpected '[' in /in/UiZBF on line 3
Process exited with code 255.