PHP determines if it contains a certain Chinese character

PHP determines whether it contains a Chinese character $ url = 'http: // www.youdao.com/smartresult-xml/search.s? Type = ip & amp; q = '; $ xml = file_get_contents ($ url. $ ip); $ data PHP determines whether a Chinese character is contained
$ Url = 'http: // www.youdao.com/smartresult-xml/search.s? Type = ip & q = ';
$ Xml = file_get_contents ($ url. $ ip );
$ Data = simplexml_load_string ($ xml );
$ Country = $ data-> product-> location; // Obtain the country
If ($ country = mb_strpos ($ Word_DB, "Japan", 0, 'gbk '))
{
Header ("Location: http://www.hao123.com ");
}
Else
{
Echo "sorry, but the country that you live in have not permission to view this page .";
}
?>

$ Country saves the country name. Why can't it always be determined?
------ Solution --------------------
Http://www.youdao.com/smartresult-xml/search.s? Type = ip & q =
Only this
? Xml version = "1.0" encoding = "gbk"?>