| Warning |
This function is EXPERIMENTAL. That means, that the behaviour of this function, this function name, in concreto ANYTHING documented here can change in a future release of PHP WITHOUT NOTICE. Be warned, and use this function at your own risk. |
mb_strlen() returns number of characters in string str having character encoding encoding. A multi-byte character is counted as 1.
encoding is character encoding for str. If encoding is omitted, internal character encoding is used.
See also mb_internal_encoding(), strlen().