3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php $arr=array(1=>1,2=>2); $count=count($arr); foreach($arr as $key=>$value){ if($key%2==0){ unset($arr[$key]); $count--; } if(1!=$count) continue; else return $key; }
based on N5fBA
Output for 4.3.0 - 5.6.28, hhvm-3.10.0 - 3.12.0, 7.0.0 - 7.1.0