how would one detect if a user put the unicode U+202E in their file? I dont want to accept files with that character for security reasons.
Thank you very much.
To remove:
$str = preg_replace("/[\x{202E}]+/u", "", $str);
or just check if something contains U+202E
if(preg_match("/[\x{202E}]+/u", $str)){
if you want to search all U+202A-E use [\x{202A}-\x{202E}]