// Replace it!
$start = mb_strpos($text, $url, $offset);
- $text = substr_replace($text, $modified_url, $start, mb_strlen($url));
+ $text = mb_substr($text, 0, $start).$modified_url.mb_substr($text, $start + mb_strlen($url), mb_strlen($text));
$offset = $start + mb_strlen($modified_url);
}