使用UTF-8在PHP中打开XML文件时出错

In my page, I try to open some xml files:

$xml = simplexml_load_file("users/" .$f->name."/data.xml");

The problem is that $f->name can include characters as vowels with accents, and because of that there´s an error when opening the file. For example, instead of García, it reads García. How can I solve it? (I´ve already tried with utf8_encode($f->name))

Try:

$xml = simplexml_load_file("users/" .rawurlencode($f->name)."/data.xml");