Re: [[:cntrl:]]? (Bugs)
Together with "u" (
/\w/u
) it should act for all unicode chars in any writing system, numbers and "_".
<?php if(preg_match("/[^\w]/u", 'тест')) echo 'Non alphanumeric charecter(s) found!'; ?>
→ Non alphanumeric charecter(s) found!