3v4l.org

run code in 300+ PHP versions simultaneously
<?php var_dump(substr('a', 0, 2)); // string(1) "a" var_dump(substr('', 0, 2)); // bool(false) var_dump(substr('a', 1)); // bool(false)
Output for git.master, git.master_jit, rfc.property-hooks
string(1) "a" string(0) "" string(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:
30.22 ms | 401 KiB | 8 Q