[PHP] pobierz, plaintext if(preg_match('/^([a-z0-9]+)$/i', $tekst)) return true;[PHP] pobierz, plaintext
[PHP] pobierz, plaintext if(preg_match('#^[a-z0-9\p{L}]+$#ui', $tekst)) return true;[PHP] pobierz, plaintext
[PHP] pobierz, plaintext if(preg_match('/^([A-Za-z0-9±ćęłńó¶ĽżˇĆĘŁŃÓ¦¬Ż]+)$/i', $tekst)) return true;[PHP] pobierz, plaintext
[PHP] pobierz, plaintext if(preg_match('#^[a-z0-9±ćęłń󶿼ˇĆĘŁŃӦݬ]+$#i', $tekst)) echo 'ok';[PHP] pobierz, plaintext
[HTML] pobierz, plaintext <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />[HTML] pobierz, plaintext