- mb_convert_encoding: documentation ( source)
- var_dump: documentation ( source)
- dechex: documentation ( source)
<?php
var_dump(dechex(128));
$wrongUtf8 = mb_convert_encoding('öäü', 'UTF-8', 'ISO-8859-1');
var_dump($wrongUtf8);
$validUtf8 = mb_convert_encoding($wrongUtf8, 'ISO-8859-1', 'UTF-8');
var_dump($validUtf8);