- substr: documentation ( source)
- mb_internal_encoding: documentation ( source)
<?php
/* Set internal character encoding to UTF-8 */
mb_internal_encoding("UTF-8");
$chars = '안녕하세요ABCDEFGHIJKLMNOPQRSTUVWXYZ안녕하세요';
$len = strlen($chars);
for ($i = 0; $i < $len; $i++) {
echo substr($chars,$i,1).'|';
}