3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php $hello[0]["1"] = "v:a"; $hello[0]["2"] = "v:b"; for($i=0;$i<count($hello[0]);$i++) { echo $hello[0][$i+1]; }
based on kCpFS
Output for 5.6.0 - 5.6.30, hhvm-3.15.4, 7.0.0 - 7.2.0
v:av:b