3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php $a = array("&", "^", "|", "~"); array_walk($a, "preg_quote"); $b = implode("|", $a); echo $b;
based on o4ucH
Output for 4.3.0 - 7.2.6
&|^|||~