3v4l.org

run code in 300+ PHP versions simultaneously
<?php $string = 'a{ra:calc(*(la)100%);font-s'; $calc_regex = '(?<=:| |,|\\(|\\))(calc)\\s*(\\()\\s*((?:[^()]+|\\((?2)\\))*?)\\s*(\\))'; $string = preg_match('/'.$calc_regex.'/si', $string, $matches); var_dump($matches);
Output for git.master, git.master_jit, rfc.property-hooks
array(0) { }

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:
40.9 ms | 401 KiB | 8 Q