3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php $y = 0; for($i = 0; $i < 100000; $i++){ $y += $i; $x = implode("", array("xxxx", "xxxx", "xxxx","xxxx")); } echo $x.$i;
based on HvpCg
Output for 4.3.0 - 5.6.21, hhvm-3.10.0 - 3.12.0, 7.0.0 - 7.1.0
xxxxxxxxxxxxxxxx100000