foreach ($res as &$val1) {
$val1 = iconv('UTF-8', 'GBK', $val1);
}
arsort($res);
foreach ($res as &$val1) {
$val1 = iconv('GBK', 'UTF-8', $val1);
}
foreach ($res as &$val1) {
$val1 = iconv('UTF-8', 'GBK', $val1);
}
arsort($res);
foreach ($res as &$val1) {
$val1 = iconv('GBK', 'UTF-8', $val1);
}