3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php $arr = array(1,2,3,4,5,6,7,8,9,10,'a','b','c','d','e','f','g','h','i','j'); $tmp0 = $arr[0]; $tmp1 = $arr[10]; for($i=0,$j=10;$i<count($arr);$i+=2,$j++){ $arr[$i]=$tmp0; $tmp0 = $arr[$i+1]; $arr[$i+1]=$tmp1; $tmp1 = $arr[$j]; } for($i=0;$i<count($arr);$i++){ echo($arr[$i]." "); } ?>
Output for 4.3.0 - 7.1.0
1 a 2 a 4 b 6 c 8 d 10 e b f d g f h h i