- substr: documentation ( source)
- var_dump: documentation ( source)
- mb_substr: documentation ( source)
<?php
$string = "Zo\u{00EB}";
var_dump($string);
echo "\n";
var_dump(substr($string, -1));
var_dump(mb_substr($string, -1));
var_dump(iconv_substr($string, -1));
var_dump(grapheme_substr($string, -1));