3v4l.org

run code in 300+ PHP versions simultaneously
<?php $a = ' A0'; for ($i=0;$i<20;$i++) var_dump($a++);

Shows result from various feature-branches currently under review from the php developers. Contact me to have additional branches featured.

Output for branch master
string(3) " A0" string(3) " A1" string(3) " A2" string(3) " A3" string(3) " A4" string(3) " A5" string(3) " A6" string(3) " A7" string(3) " A8" string(3) " A9" string(3) " B0" string(3) " B1" string(3) " B2" string(3) " B3" string(3) " B4" string(3) " B5" string(3) " B6" string(3) " B7" string(3) " B8" string(3) " B9"

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