- var_dump: documentation ( source)
- mb_detect_encoding: documentation ( source)
- str_split: documentation ( source)
- mb_str_split: documentation ( source)
<?php
var_dump(mb_detect_encoding(''));
var_dump(mb_str_split('', 1));
var_dump(mb_str_split('', 1, 'ASCII'));
var_dump(mb_str_split('', 1, 'UTF-8'));
var_dump(str_split('', 1));