Solve the json_encode of PHP to deal with Chinese transcoding as a whole English method

The recent use of Json_encode transform arrays into JSON data, stored in the database, because the length of the field is not determined, you can only use this method, but the use of json_decode resolution of the array, there is a class

Like "U590fu5a03u7684u8bf1u60d14u5979u7684u6280u5de7″, through the query Baidu, this should be a UCS-2 encoded string, then how to convert this string?"

In fact, in the previous version of php5.2 to do json_encode conversion time. Chinese will be UNICODE encoding, php5.3 added the options parameter, after 5.4 to join the Json_unescaped_unicode, this parameter, do not need to do escape and UNICODE processing. So it is necessary to deal with Chinese before 5.4.
php5.4 inside the deal

Json_encode ($str, Json_unescaped_unicode);

Before php5.4, there are two ways of handling

Method One

function Encode_json ($str) {return
preg_replace ("/U (0-9a-f]+)/ie", Iconv (' UCS-2 ', ' UTF-8 ', pack (' H4 ', ' \  1 ')) ", $code);
}

In practical applications there is a problem, some of the characters will be dropped, not only why, such as strings: "Date 11.2″ will be changed to" date. 2″.

Method Two

function Encode_json ($str) {return
UrlDecode (Json_encode (Url_encode ($STR)));
}
function Url_encode ($str) {
if (Is_array ($STR)) {
foreach ($str as $key => $value) {
$s        Tr[urlencode ($key)] = Url_encode ($value);
}
Else {
$str = UrlEncode ($STR);
return
$str;
}

This site is using a virtual host, you can not modify the version of PHP, so you can only use the first method, but the method does still have effect.

Method three
function Decodeunicode ($str) {return
preg_replace_callback ('/\\\\u ([0-9a-f]{4})/I ',
create_   function (
' $matches ',
' Return mb_convert_encoding (Pack ("h*", $matches [1]), "UTF-8", "ucs-2be"); '
),
$str);