$re = '/[\x{627}\x{625}\x{623}\x{622}]\x{062D}\x{0645}\x{062F}/u';
$str = 'Ø£Øمد
اØمد
Ø¥Øمد
Ø¢Øمد';
preg_match_all($re, $str, $matches, PREG_SET_ORDER, 0);
// Print the entire match result
var_dump($matches);
Please keep in mind that these code samples are automatically generated and are not guaranteed to work. If you find any syntax errors, feel free to submit a bug report. For a full regex reference for PHP, please visit: http://php.net/manual/en/ref.pcre.php