Xcode 8.3 get data from php and json - php

Question

I'm trying to make a small program, that send a username to a web data base. and get the name, status, point of the user.
i have fund out how to send the username, and get the json output.
it look like this: {"name":"gert","status":"0","point":"20"}
and this is my php code
<?php
header('Content-type: application/json');
ob_start();
session_start();
mysql_connect("host","username","password");
mysql_select_db("dbname") or die("Unable to select database");
$qrcode = $_POST['username'];
$result = mysql_query("SELECT * FROM qrcode WHERE qrcode = '$qrcode' ");
$pic_name = mysql_fetch_array($result);
$myObj = new \stdClass();
$myObj->name = $pic_name['name'];
$myObj->status = $pic_name['status'];
$myObj->point = $pic_name['point'];
$myJSON = json_encode($myObj);
echo $myJSON;
ob_end_flush();
?>
and this is my swift code
import UIKit
class ViewController: UIViewController {
let url_to_request:String = "http://www.hholm.dk/time_app/gertqrcode.php"
override func viewDidLoad() {
super.viewDidLoad()
download_request()
}
func download_request()
{
let url:URL = URL(string: url_to_request)!
let session = URLSession.shared
let request = NSMutableURLRequest(url: url)
request.httpMethod = "POST"
request.cachePolicy = NSURLRequest.CachePolicy.reloadIgnoringCacheData
let paramString = "username=200"
request.httpBody = paramString.data(using: String.Encoding.utf8)
let task = session.downloadTask(with: request as URLRequest, completionHandler: {
(
location, response, error) in
let urlContents = try! NSString(contentsOf: location!, encoding: String.Encoding.utf8.rawValue)
guard let _:NSString = urlContents else {
print("error")
return
}
print(urlContents)
})
task.resume()
}
}
and now i have to extract the json, (i think its called)
I would like to have the name, status and point, as some ting i can use i the rest of the program.

Answer 1

try it.
If you have any questions let me know, I hope I have helped!
import Foundation
import UIKit
class getJSON: NSObject, URLSessionDataDelegate
{
//properties
var data : NSMutableData = NSMutableData()
func downloadItems(user:String)
{
let url = NSMutableURLRequest(url: NSURL(string: "http://192.168.1.102:8888/test/test.php")! as URL)
url.httpMethod = "POST"
let postString = "a=\(user)"
url.httpBody = postString.data(using: String.Encoding.utf8)
print(url.httpBody = postString.data(using: String.Encoding.utf8))
var session: URLSession!
let configuration = URLSessionConfiguration.default
session = URLSession(configuration: configuration, delegate: self, delegateQueue: nil)
let task = session.dataTask(with: url as URLRequest)
task.resume()
}
func urlSession(_ session: URLSession, dataTask: URLSessionDataTask, didReceive data: Data)
{
self.data.append(data as Data);
}
func urlSession(_ session: URLSession, task: URLSessionTask, didCompleteWithError error: Error?)
{
if error != nil
{
print("Not Found", error ??)
}
else
{
print("Ok")
self.parseJSON()
}
}
func parseJSON()
{
var jsonResult: NSArray = NSArray()
do
{
jsonResult = try JSONSerialization.jsonObject(with: self.data as Data, options:JSONSerialization.ReadingOptions.allowFragments) as! NSArray
print("jsonResult.count",jsonResult.count)
}
catch let error as NSError
{
print("jsonResult: ", error)
}
var jsonElement: NSDictionary = NSDictionary()
var contador = 0
for i in (0..<jsonResult.count)
{
jsonElement = jsonResult[i] as! NSDictionary
if let nameUser = jsonElement["name"] as? String,
let pointUser = jsonElement["point"] as? String,
let statusUser = jsonElement["status"] as? String
{
print("Name: ", nameUser)
print("Status: ", statusUser)
print("Point: ", pointUser)
}
}
}
}
Try this in your php, I'm showing you how I made it work for me, it will need to change as you wish, I'm passing this code as an example.
<?php
header('Content-type: application/json');
ob_start();
session_start();
mysql_connect("host","username","password");
mysql_select_db("dbname") or die("Unable to select database");
$qrcode = $_POST['username'];
$query="SELECT name,status,point FROM qrcode WHERE qrcode = '$qrcode'";
$resultset = mysql_query($query, $connection);
$data = array();
while ($row = mysql_fetch_assoc($resultset))
{
$data[] = $row;
}
//echo '<pre>',print_r($data),'</pre>';
echo json_encode($data);
ob_end_flush();
?>
In your viewcontroller:
import UIKit
class ViewController: UIViewController
{
override func viewDidLoad()
{
super.viewDidLoad()
print("Status: ",getStatusUSer)
}
#IBAction func get(_ sender: Any)
{
let userName = "charles"
let getUser = getJSON()
getUser.downloadItems(user:userName)
}
//Your Code...
}