3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php $a=$b=array(); $a[] = 123; $b[]=321; var_dump($a,$b);
Output for 4.3.0 - 5.6.28, hhvm-3.12.0, 7.0.0 - 7.1.0
array(1) { [0]=> int(123) } array(1) { [0]=> int(321) }
Output for hhvm-3.10.0

Process exited with code 153.