GBK ページ出力 JSON PHP コード

function tb_json_encode($value, $options = 0)
{
 return json_encode(tb_json_convert_encoding($value, “GBK”, “UTF-8″));
 }
function tb_json_decode($str, $assoc = false, $ Depth = 512)
{
 return tb_json_convert_encoding(json_decode($str, $assoc), “UTF-8″, “GBK ”);
}
function tb_json_convert_encoding($m, $from, $to)
{
 switch(gettype($m)) {
 case 'integer':
 case 'boolean' :
 case 'float':
 case 'double':
 case 'NULL':
 return $m;
    case 'string':
 return mb_convert_encoding($m, $to, $from);
 case 'object':
 $vars = array_keys(get_object_vars($m));
 foreach($vars as $key) {
 $ m->$key = tb_json_convert_encoding($m->$key, $from ,$to);
 }
 return $m;
 case 'array':
 foreach($m as $k => $v ) {
 $m[tb_json_convert_encoding($k, $from, $to)] = tb_json_convert_encoding($v, $from, $to);
 }
 return $m;
 デフォルト:
 }
 return $m;
}
?>