- htmlentities: documentation ( source)
- html_entity_decode: documentation ( source)
<?php
$string = '杭州华辰假日宾馆';
echo html_entity_decode($string,ENT_XML1, 'UTF-8');
echo '<br>';
echo htmlentities($string, ENT_COMPAT | ENT_XML1, 'UTF-8');
echo '<br>';
echo iconv('UTF-8', 'ASCII//TRANSLIT', $string);