How to handle user input of invalid UTF-8 characters?

Question

I\'m looking for general a strategy/advice on how to handle invalid UTF-8 input from users.

Even though my webapp uses UTF-8, somehow some users enter invalid chara

Answer 1

There is a multibyte extension for PHP, check it out: http://www.php.net/manual/en/book.mbstring.php

You should try mb_check_encoding() function.

Good luck!