3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php for($i = 0; $i < 100000; $i++){ $x = implode("", array("xxxx", "xxxx", "xxxx","xxxx")); } echo $x;
based on W39fA
Output for 4.3.0 - 7.1.0
xxxxxxxxxxxxxxxx