shankao

<?php
// Levenshtein distance with multibyte support
// Improved from https://gist.github.com/santhoshtr/1710925
function mb_levenshtein($str1, $str2, $encoding = 'UTF-8', $return_lengths = false){
        $length1 = mb_strlen($str1, $encoding);
        $length2 = mb_strlen($str2, $encoding);
        if( $str1 === $str2) {
                if ($return_lengths) {
                        return array(0, $length1, $length2);
                } else {