[PHP] pobierz, plaintext 
$x = 'abcdefght';
$y = 'abwxde';
[PHP] pobierz, plaintext 

[PHP] pobierz, plaintext 
$x = str_split('abcdefght');
$y = str_split('abwxde');
 
var_dump(array_diff($y, $x));
[PHP] pobierz, plaintext