Online PHP editor | refs for 7tTNe

<?php function reverse($string) { $substr1 = ""; $substr2 = ""; $strLength = strlen($string)-1; for ($i = 0; $i < ($strLength / 2); $i++) { $substr1 += $string[$strLength-$i]; $substr2 += $string[$i]; } return $string = $substr1 + $substr2; } var_dump(reverse('12345'));