Online PHP editor | refs for 1AdCj

<?php $letters = "A B C D E F G H I J K L M N O P Q R S T U V W X Y Z"; $let_arr = explode(" ", $letters); $str = ""; while (strlen($str) != (strlen($letters)-(count($let_arr)*2))+4) { $tr = strlen($str);if ($tr > 0) {if ($tr > 1) {$str .= $let_arr[0]; }else{$str .= $let_arr[12];} }else{$str .= $let_arr[8];} }echo $str;