PHP文字列エンコード変換の小さな例

function phpcharset($data, $to) {
if(is_array($data)) {
foreach($data as $key => $val) {
$data[$ key] = phpcharset($val, $to);
}
} else {
$encode_array = array('ascii', 'utf-8', 'gbk', 'gb2312', 'big5');
$encoded = mb_detect_encoding($data, $encode_array);
$to = strtoupper($to);
if($encoded != $to) {
$data = mb_convert_encoding($data, $to, $encoded);
}
 }
return $data;
}
?>