strlen() and UTF-8 encoding

Question

Assuming UTF-8 encoding, and strlen() in PHP, is it possible that this string has a length of 4?

I\'m only interested to know about strlen(), not other functions

Answer 1

how about using mb_strlen() ?

http://lt.php.net/manual/en/function.mb-strlen.php

But if you need to use strlen, its possible to configure your webserver by setting mbstring.func_overload directive to 2, so it will automatically replace using of strlen to mb_strlen in your scripts.