- mb_convert_encoding: documentation ( source)
- mb_list_encodings: documentation ( source)
<?php
$val = "á|â|à|å|ä ð|é|ê|è|ë í|î|ì|ï ó|ô|ò|ø|õ|ö ú|û|ù|ü æ ç ß abc ABC 123";
echo mb_convert_encoding($val, 'UTF-8');
foreach(mb_list_encodings() as $chr){
echo mb_convert_encoding($val, 'UTF-8', $chr)." : ".$chr."<br>";
}