PHP Array Conversion JSON There's a problem, everybody.

Why does the following remark not output anything?

echo Json_encode ($result); #输出结果

Personally, it may be because the array element inside the $data is the client object, and there is a problem when it goes to JSON. But I don't know what the problem is, how to convert it? Or is there any other method of conversion?

Class Result {var $state; var $data = array ();}

Full code:

$start = 0; $end = 2; $uid = 1; $result = new result (); $result _set = Getclients ($start, $end, $uid); $data = Array (); $count = 0;while ($row = mysql_fetch_array ($result _set)) {$client = new client (); $client->cid = $row [' id ']; $client->gender = $row [' Gender ']; $client->rank = $row [' rank ']; $client->name = $row [' name ']; $client->phonenum = $row [' Phonenum ']; $client->email = $row [' email ']; $client->address = $row [' address ']; $result->data[$count] = $ Client;echo $result->data[$count]->cid. "  "; echo $result->data[$count]->gender. "  "; echo $result->data[$count]->rank. "  "; echo $result->data[$count]->name. "  "; echo $result->data[$count]->phonenum. "  "; echo $result->data[$count]->address. " \ n "; $count + +;    } if (count ($data) > 0) {$result->state = 0;} else {$result->state = 1;} echo Json_encode ($result); #输出结果class result {var $state; var $data = array ();}

Output Result:

----------Debug PHP----------deprecated:mysql_connect (): The MySQL extension is Deprecated and would be a removed in the F  Uture:use mysqli or PDO instead in D:\WWW\wsd\trunk\src\server\api\db\init_db.php on line 10deprecated:mysql_connect (): The MySQL extension is deprecated and would be removed in the Future:use mysqli or PDO instead in D:\WWW\wsd\trunk\src\se Rver\api\db\init_db.php on line 103  0  manager  Zhangxiaoli  18825044888  Guangdong Guangzhou Tianhe District 4  0  supervisor  Wu Mifeng  18576430777,  No. 1079th, Nanhai Avenue, Shekou, Shenzhen, Nanshan District, Guangdong, China php Deprecated:  mysql_connect (): The MySQL extension is Deprecated and would be Removed in the Future:use mysqli or PDO instead in D:\WWW\wsd\trunk\src\server\api\db\init_db.php on line 10PHP deprecate  D:  mysql_connect (): The MySQL extension is deprecated and would be a removed in the Future:use mysqli or PDO instead in D:\WWW\wsd\trunk\src\server\api\db\init_db.php on line 10Output completed (0 sec consumed)-Normal termination

There should be output similar to this format in order to:

{"state": 1, "Data": [           {"CID": 3,          "gender": 0,          "rank": "Manager"          "name": "Zhangxiaoli"          "Phonenum": "18825044888  "          address": "Guangdong Province Guangzhou Tianhe District"},          {"CID": 4,          "gender": 0,          "rank": "Supervisor"          "name": "Wu Mifeng"          "Phonenum": "18576430777  "          "Address" : "1079th Nanhai Road, Shekou, Shenzhen, Nanshan District, Guangdong Province, China"}          

May I ask what is the problem? How to solve? Thank you!

Reply to discussion (solution)

Print_r ($result);
What can you see?

$result is an object, the output is wrong:
Catchable fatal error:object of class Result could not being converted to string in D:\WWW\wsd\trunk\src\server\api\getClien Ts.php on line 44

Object of class Result could not being converted to string objects cannot be converted to strings
And, of course, it can't be json.
Take a look at your Client class definition

It might not be worth it.

Coding problem, Json_encode () is only valid for Utf-8, when creating a database table, set the table encoding is utf-8, when connecting to the database also set the encoding on the line, similar to:
function Connect_host () {
$host = "127.0.0.1";
$name _db = "root";
$password _db = "root";
$name _TB = "wsd_db";
$con = mysql_connect ($host, $name _db, $password _db);

if (! $con) {
echo "Connect host failed". Mysql_error ();
Return
}
mysql_select_db ($name _tb, $con);
mysql_query ("SET NAMES UTF8"); #设置utf-8 encoding
return $con;
}

