3v4l.org

run code in 300+ PHP versions simultaneously
<?php $regex = '/(.a|aaa)(?=xyz\Kaa)./'; $subject = "aaaaxyzaabaa"; // Comment/uncomment below as wanted. // All 3 functions are vulnerable (note, other functions are affected as well) $x=preg_replace($regex, '\0',$subject); var_dump($x);
Output for git.master, git.master_jit, rfc.property-hooks
NULL

This tab shows result from various feature-branches currently under review by the php developers. Contact me to have additional branches featured.

Active branches

Archived branches

Once feature-branches are merged or declined, they are no longer available. Their functionality (when merged) can be viewed from the main output page


preferences:
41.44 ms | 401 KiB | 8 Q