- var_dump: documentation ( source)
- html_entity_decode: documentation ( source)
<?php
$data = 'Eine Zusammenfassung des PMBOK&reg; Guide - Kurz und B&uuml;ndig';
var_dump(html_entity_decode(html_entity_decode($data, ENT_COMPAT | ENT_HTML401, 'UTF-8'), ENT_COMPAT | ENT_HTML401, 'UTF-8'));