$re = '/[^-.\p{L}\p{Nd}\x{0590}-\x{05ff}\x{0600}-\x{06ff}]+/ui';
$str = 'asx24Å,å,Ä,ä,Ö,öaaåäöAvVBb@-
Åke.
Björn.
Åsaشآ
02156498-@#$-1234æ
ي أو فارسي
ب
';
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