The difference between strlen and Mb_strlen functions in PHP

strlen

strlen-Get string length
int strlen (String $string)
Returns the length of the given string.

Mb_strlen

int Mb_strlen (String $str [, String $encoding])
Returns the length of the given string.
The encoding parameter is a character encoding. If omitted, the internal character encoding is used.

Example:

<?php//How to encode a file when testing if UTF8    $str= ' Chinese a character 1 characters '; Echo strlen($str).‘ <br> ';// -    EchoMb_strlen ($str, ' UTF8 '). ' <br> ';//6    EchoMb_strlen ($str, ' GBK '). ' <br> ';//8    EchoMb_strlen ($str, ' gb2312 '). ' <br> ';//Ten?>

The difference between strlen and Mb_strlen functions in PHP