Help with Extended ASCII/Encoding in PHP!

[GhostAI]

Good Evening folks.This is my code:\[code\]static private function removeAccentedLetters($input){ for ($i = 0; $i < strlen($input); $i++) { $input[$i]=self::simplify($input[$i]); } return $input;}static private function simplify($in){ $ord=ord($in); switch ($ord) { case 193: //