Have you done a strlen () in PHP and it returns more characters than the count?
Is it weird?
Yes, it is an unexpected behavior and it can give you a headache.
In our case we had a code where if the word was greater than 3 characters, we searched the database in one way and if not we did it in another.
We detected that in some cases it did not work.
For example, the word "uño" returned 4 characters.
Solution: use the mb_strlen () function
Programming stuff .... :)