Json_encode Chinese display problem solution

Json has become the most common data format for web development. php also supports json and array conversion functions json_encode and json_decode from 5.2. However, we will find that (the Chinese character "you" is used as an example below) all Chinese characters converted using the json_encode function are encoded like u4f60 (you, although it does not affect program execution, it is not intuitive

First, json_encode converts the processing of Chinese characters to the hexadecimal representation u4f60 of the corresponding unicode code (similar to the js escape function (% u4f60), that is, 0x4f60. Therefore, we only need to convert the unicode code (UCS-2) into UTF-8 encoded Chinese characters. The function is as follows:

The code is as follows:	Copy code
/** * Json_encode supports the Chinese version. * @ Param mixed $ data parameter and json_encode are identical */ Function json_encode_cn ($ data ){ $ Data = json_encode ($ data ); Return preg_replace ("/\ u ([0-9a-f] {4})/ie", "iconv ('ucs-2', 'utf-8 ', pack ('H * ',' $ 1'); ", $ data ); }

Here, first convert the target data to a json string of the unicode encoding code, then use the regular expression to replace the four letters starting with the corresponding u with the corresponding text, and then transcode it again. The e in preg_replace regular expression allows the second parameter to perform the eval operation. It matches uxxxx first, and then converts the hexadecimal value xxxx to a Unicode character through the pack function, then convert the Unicode code to the UTF-8 code, and then you can see the normal Chinese characters.

Another solution where json_encode () does not support Chinese characters

The code is as follows:

Copy code

/** * Urlencode the array and scalar * Generally, wphp_json_encode () is called () * Handling the problem of json_encode Chinese display * @ Param array $ data * @ Return string */ Function wphp_urlencode ($ data ){ If (is_array ($ data) | is_object ($ data )){ Foreach ($ data as $ k => $ v ){ If (is_scalar ($ v )){ If (is_array ($ data )){ $ Data [$ k] = urlencode ($ v ); } Else if (is_object ($ data )){ $ Data-> $ k = urlencode ($ v );     } } Else if (is_array ($ data )){ $ Data [$ k] = wphp_urlencode ($ v); // recursively call this function } Else if (is_object ($ data )){ $ Data-> $ k = wphp_urlencode ($ v );    }   }  } Return $ data; } /** * Json encoding  * * The problem that the Chinese characters are not displayed intuitively after json_encode () processing * By default, "Chinese" is changed to "u4e2du6587", which is not intuitive. * If you do not have special requirements, we do not recommend using this function. Using json_encode directly is better, saving resources. * Json_encode () parameters can work properly only when the encoding format is UTF-8  * * @ Param array | object $ data * @ Return array | object */ Function ch_json_encode ($ data ){ $ Ret = wphp_urlencode ($ data ); $ Ret = json_encode ($ ret ); Return urldecode ($ ret ); }