Php returns the json data function example. php returns the json function _ PHP Tutorial

Php returns the json data function example, and php returns the json function. Php returns the json data function example. php returns the json function json_encode. Echojson_encode (array (abbbb, cddddd); this will generate a standard json format data. php returns the json data function example. php returns the json function.

Json_encode () function usage.

Echo json_encode (array ('a' => 'bbbbb', 'C' => 'ddddd ');

In this way, a standard json format data is generated.

The code is as follows:

// SQL statement to be executed
// Single
$ SQL = "select id, name from tbl_user where id = 1 ";
// Multiple data entries
// $ SQL = "select id, name from tbl_user ";

// Call the conn. php file for database operations
Require ('Conn. php ');

// Message indicating successful operation. note: $ result exists in the conn. php file and is called.
If ($ result)
{

// $ Array = mysql_fetch_array ($ result, MYSQL_ASSOC );


/* Dataset

$ 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 entry */

$ Row = mysql_fetch_row ($ result, MYSQL_ASSOC );

Echo json_encode (array ('jsonobj '=> $ row ));
}

Mysql_free_result ($ result );
// Release result
Mysql_close ();
// Close the connection

?>

The above is the json data generated by the database.

Single data entry: {"jsonObj": {"id": "1", "name": "lmw "}}

Multiple data entries: {"dataList": [{"id": "1", "name": "lmw" },{ "id": "2 ", "name": "xxj" },{ "id": "3", "name": "xxxj"}]}

In many cases, the program needs to return a result in Json format, for example:

The code is as follows:
{
"UserKeyGetResponse ":
{"RequestName": "e99e6d63e8c712d7699f52978a", "api_key_value": "41954dd9b1cb6a95802eab6810 "},
"Error_response ":
{"Code": "NO_ERROR (www.111cn.net)", "msg": "system parameter retrieved "}
}

You can write the result as an array:
$ Respon = array ('userkeygetresponse' => array ('requestname' => $ api_request_name, 'api _ key_value '=> $ api_key_value ),
'Error _ response' => array ('code' => 'No _ error', 'MSG '=> 'system parameter Retrieved successfully '));

Code

The code is 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 nonexistent ');
Echo JSON ($ array );

Result:
{"Code": "ERROR_MSG_MISS", "msg": "The message does not exist "}
The client can parse this result. of course, the error code should be replaced by a number.

This is much better. we can display Chinese characters directly. of course, it is okay to display the hexadecimal encoding.
From: http://www.111cn.net/phper/php/62544.htm

How does PHP process the json data returned by the backend?

You are sending an ajax request with jquery! You can use $. each (msg, function (item, index ){
// Item indicates each object!
// Index indicates the index
});

Example of how to use json code in PHP

Use the json_decode function to decrypt data .. The JSON function used by PHP is: json_encode ($ PHPcode );
The JSON parsing function of PHP is: json_decode ($ JSONcode); therefore, there are many JSON forms, and different forms are different after PHP interprets them. // Form 1: it is completely in the form of an object. this form of data is also called a related array in Javascript. What is different from a general array is that, it can be accessed through string indexing (using "[]" or ". $ json = '{"item1": {"item11": {"n": "chenling", "m": "llll "}, "sex": "male", "age": "25"}, "item2": {"item21": "ling", "sex": "female ", "age": "24"} '; $ J = json_decode ($ json); print_r ($ J ); let's take a look at this article on php json data operations from the php beginner's Portal: www.phpnewer.com/index.php/Cjwt/detail/id/147.

Json_encode () function usage. Echo json_encode (array ('a' = 'bbbbbb', 'C' = 'ddddd '); then a standard json format data is generated...