- var_dump: documentation ( source)
- mb_detect_encoding: documentation ( source)
- levenshtein: documentation ( source)
- iconv: documentation ( source)
<?php
var_dump(mb_detect_encoding('прив'));
var_dump(levenshtein(iconv('UTF-8', 'cp1251', 'we'), iconv('UTF-8', 'cp1251', 'hell')));