The PHP json_encode () function returns the JSON data instance code, json_encodejson_php tutorial

The PHP json_encode () function returns the JSON data instance code, Json_encodejson

Json_encode () function usage.

echo json_encode (Array (' a ' = ' = ' bbbb ', ' c ' = ' ddddd ');

This will generate a standard JSON-formatted data

The code is as follows

<?php//need to execute SQL statement//single $sql= "Select Id,name from Tbl_user where id=1";//Multiple data//$sql = "Select Id,name from Tbl_user";// Call conn.php file for database operation require (' conn.php ');//Prompt Operation success Information, note: $result exists in the conn.php file, is called out if ($result) {//$array =mysql_ Fetch_array ($result, MYSQL_ASSOC);/* Data set $users=array (); $i =0;while ($row =mysql_fetch_array ($result, Mysql_assoc)) { echo $row [' id ']. ' -----------'. $row [' name ']. '
'; $users [$i]= $row; $i + +;} echo json_encode (Array (' dataList ' + $users)), *//* single data */$row =mysql_fetch_row ($result, MYSQL_ASSOC); Echo Json_ Encode (Array (' jsonobj ' = $row));} Mysql_free_result ($result);//release result mysql_close ();//close Connection?>

This is the database that generated the JSON data.

Single data: {"Jsonobj": {"id": "1", "name": "LMW"}}

Multiple data: {"DataList": [{"id": "1", "name": "LMW"},{"id": "2", "Name": "XXJ"},{"id": "3", "Name": "Xxxj"}]}

Now in many cases, we need the program to return a JSON-formatted result, such as:

The code is as follows
Copy the Code code as follows:
{
"Userkeygetresponse":
{"Requestname": "e99e6d63e8c712d7699f52978a", "Api_key_value": "41954dd9b1cb6a95802eab6810"},
"Error_response":
{"Code": "No_error (www.jb51.net)", "MSG": "Get System parameters succeeded"}
}

You can write the result in an array form like this:
Copy the Code code as follows:
$respon = Array (' userkeygetresponse ' = = Array (' requestname ' = = $api _request_name, ' api_key_value ' = = $api _key_ Value),
' Error_response ' = = Array (' Code ' = ' no_error ', ' msg ' = ' = ' Get system parameters succeeded '));

Code

Copy the Code code as follows:
Function arrayrecursive (& $array, $function, $apply _to_keys_also = False)
{
static $recursive _counter = 0;
if (+ + $recursive _counter > 1000) {
Die (' Possible deep recursion attack ');
}
foreach ($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--;
}
G:
$error _respon = Array (' Code ' = ' Error_msg_miss ', ' msg ' = ' message not present ');
echo JSON ($array);

The result is:

{"Code": "Error_msg_miss", "MSG": "Message does not exist"}
The client can parse the result, and of course the error code should be replaced with a number.

So much the more we show the direct is the Chinese, of course, the 16 binary encoding is not a problem oh.

Teach PHP to take JSON code example

Use the Json_decode function to decrypt the data: PHP application JSON functions are: Json_encode ($PHPcode);
PHP parsing JSON functions are: Json_decode ($JSONcode), so there are many forms of JSON, different forms in PHP after the form of interpretation is also different. Form 1: Exactly the form of the object, this form of data in JavaScript is also called the relevant array, unlike a general array, it can be indexed by the string to access (with "[]" or "." to represent the hierarchy) $json = ' {"" item1 ": {" Item11 ": {" n ":" Chenling "," M ":" Llll "}," Sex ":" Male "," age ":" + "}," item2 ": {" Item21 ":" Ling "," Sex ":" Female "," Age ":" 24 "}} '; $J =json_decode ($json); Print_r ($J); Take a look at the PHP novice web This article on PHP operation JSON data: www.phpnewer.com/index.php/Cjwt/detail/id/147

Code for PHP output JSON data

Pro, you are not in the environment to execute AH, need to php+apache compiled

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