3v4l.org

run code in 300+ PHP versions simultaneously
<?php $filter = 'ololo'; $k = "substr('filter',1,1)"; echo ${$k};
Output for git.master, git.master_jit, rfc.property-hooks
Warning: Undefined variable $substr('filter',1,1) in /in/smBFr on line 4

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:
46.09 ms | 401 KiB | 8 Q