3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php $str = "abcdefghijklmn"; $print = strrev($str); $st=""; $size = strlen($print); for($i = 0;$i<size;$i=$i+2) { if($i+1 < $size ) $st .= substr($print,$i,$i); echo $st; }
Output for 4.3.0 - 5.6.28, hhvm-3.10.0 - 3.12.0, 7.0.0 - 7.1.0
Notice: Use of undefined constant size - assumed 'size' in /in/1GFlc on line 6