The solution of the Chinese garbled problem in PHP json_encode _php tips

The following PHP code resolves the following issues:
1.json_encode UTF8 code in Chinese after the string is not readable
The problem of Chinese garbled 2.json_encode in multi-series group
The 3.json_encode array contains a newline error problem
Problems in 4.json_encode array with Chinese keys

Copy Code code as follows:

function _encode ($arr)
{
$na = Array ();
foreach ($arr as $k => $value) {
$na [_urlencode ($k)] = _urlencode ($value);
}
Return Addcslashes (UrlDecode (Json_encode ($na)), "\\r\\n");
}

function _urlencode ($elem)
{
if (Is_array ($elem)) {
foreach ($elem as $k => $v) {
$na [_urlencode ($k)] = _urlencode ($v);
}
return $na;
}
Return UrlEncode ($elem);
}