- var_dump: documentation ( source)
- urldecode: documentation ( source)
- preg_replace: documentation ( source)
<?php
var_dump(preg_replace('/\xA0/u', '', urldecode("Word%C2%A0Word"))); // WordWord
var_dump(preg_replace('/[^[:print:]]/', '', urldecode("%EF%BB%BFWord%C2%A0Word"))); // WordWord