Introduction to the PHP Json_encode () function

Using the Json_encode () built-in function (Php > 5.2) in PHP makes it possible for data in PHP to be well communicated and used in other languages.
The function is to convert a numeric value into a JSON data storage format.

<?php  $arr = array         (            ' Name ' = ' Shia ',            ' age ' =>20         );  $jsonencode = Json_encode ($arr);  echo $jsonencode;  ? >

The results of the program run as follows:

{"Name": null, "Age": +}   Json_encode function in Chinese is encoded as NULL, Google a bit, very simple, in order to closely integrate with the front, Json only support utf-8 encoding, I think is the front-end Javascript is also the reason for Utf-8. PHP code  <?php  $array = array      (          ' title ' =>iconv (' gb2312 ', ' utf-8 ', ' Here is the Chinese title '),          ' body ' = > ' abcd ... '      );  echo Json_encode ($array);  ? >

The result of this program is:

JS Code

{"title": "\u8fd9\u91cc\u662f\u4e2d\u6587\u6807\u9898", "Body": "ABCD ..."}

All Chinese in the

array are missing after Json_encode, or \u2353 are present. The

Workaround is to use the UrlEncode () function to handle the following, Json_encode all the contents of all arrays with UrlEncode (), and then convert the Json_encode () to a JSON string. Finally, I use UrlDecode () to turn the encoded Chinese back.

<?php/************************************************************** * * Use a specific function to manipulate all elements in an array * @param strin  G & $array The string to be processed * @param string $function the function to execute * @return Boolean $apply _to_keys_also is also applied to the key * @access Public * *************************************************************/function arrayrecursive (&$      Array, $function, $apply _to_keys_also = False) {static $recursive _counter = 0;      if (+ + $recursive _counter >) {die (' possible deep recursion attack '); } foreach ($array as $key = + $value) {if (Is_array ($value)) {arrayrecursive ($array [$key],          $function, $apply _to_keys_also);          } else {$array [$key] = $function ($value);              } if ($apply _to_keys_also && is_string ($key)) {$new _key = $function ($key);                  if ($new _key! = $key) {$array [$new _key] = $array [$key]; Unset ($array [$keY]);  }}} $recursive _counter--; /************************************************************** * * Convert array to JSON string (Chinese-compatible) * @param array $arra Y the array to convert * @return the JSON string converted from String * @access public * ************************************************      /function JSON ($array) {arrayrecursive ($array, ' UrlEncode ', true);      $json = Json_encode ($array);  Return UrlDecode ($json);      } $array = Array (' Name ' = ' Shia ', ' age ' =>20);  echo JSON ($array); ?>

This success, the results of the operation are as follows:

JS Code

{"Name": "Shia", "Age": "20"}

