3v4l.org

run code in 300+ PHP versions simultaneously
<?php $re = '/@\K[\w.]+/'; $str = '1 blah blah blah @username_. sblah sblah sblah @test'; preg_match($re, $str, $matches); echo $matches[0]; // username_.
Output for git.master, git.master_jit, rfc.property-hooks
username_.

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:
71.08 ms | 401 KiB | 8 Q