3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php $a = array('a', 'b', 'c', 'd'); for($i = 0; $i < count($a); $i += 2) { echo $i . " "; echo $a[$i + 1] . " "; echo ($i + 1) . PHP_EOL; }
based on QGB2V
Output for 5.6.0 - 5.6.30, hhvm-3.15.4, 7.0.0 - 7.3.0alpha1
0 b 1 2 d 3