Online PHP editor | output for qivpk

<?php function highlightString($highlightString,$string) { if(strlen($highlightString)>0 && strlen($string)>0) { $s = $highlightString; $rest = $string; $result = $string; do { $rest = stristr($rest,$s); $replace = substr($rest,0,strlen($s)); $result = str_replace($replace,"<span class='textHighlight'>{$replace}</span>",$result); $rest = substr($rest,strlen($s)); } while ($rest !== false); return $result; } return $string; } echo highlightString("Möhre","Möhre"); echo highlightString("Röper","Röper");