(PHP 4 >= 4.0.6, PHP 5)
mb_strpos — Find position of first occurrence of string in a string
Performs a multi-byte safe strpos() operation based on number of characters. The first character's position is 0, the second character position is 1, and so on.
Returns the numeric position of the first occurrence of needle in the haystack string. If needle is not found, it returns FALSE.