How do I get this snippet of Swift code to receive the returned values from PHP script?

Question

I am running a short Swift script to post some variables a PHP script and then read the returned value:

  let myUrl = URL(string: "http://www.quasisquest.uk/KeepScore/createCommunity.php");

    var request = URLRequest(url:myUrl!);
    request.httpMethod = "POST";

    let postString = "communityname=\(communityName!)&code=\(communityCode)&email=\(myEmail!)";

    request.httpBody = postString.data(using: String.Encoding.utf8);

    let task = URLSession.shared.dataTask(with: request) { (data: Data?, response: URLResponse?, error: Error?) in

    let json = try JSONSerialization.jsonObject(with: data!, options: .allowFragments) as? [String:AnyObject]

           print (json["code"]);
           print (json["email"]);
           print (json["communityname"]);


        }
        task.resume()
    }

In my PHP code below I simply want to receive the values, and then return them in an array:

<?php

ini_set('display_errors', 1);
ini_set('display_startup_errors', 1);
error_reporting(E_ALL);


require("Conn.php");
require("MySQLDao.php");

$email = htmlentities($_POST["email"]);
$code = htmlentities($_POST["code"]);
$communityname = htmlentities($_POST["communityname"]);

$returnValue = array();

$returnValue["code"] = $code;
$returnValue["email"] = $email;
$returnValue["communityname"] = $communityname;

echo json_encode($returnValue);

?>

I know I am doing something wrong at the end of the Swift code but I don't know what.

I am getting this error for the let task line:

Invalid conversion from throwing function of type '(Data?, URLResponse?, Error?) throws -> ()' to non-throwing function type '(Data?, URLResponse?, Error?) -> Void'

Short of running it myself, is there an error? Breakpoint "json", right click, dump, see if your data is there. Also, off topic, but if you're doing php, I'd suggest a framework, such as cakephp. — toast
– toast, Commented Oct 17, 2016 at 13:51

Jorge · Accepted Answer · 2016-10-17 16:09:10Z

2

Maybe you did not include all your code, but... are you calling task.resume()?

Try this:

let myUrl = URL(string: "http://www.quasisquest.uk/KeepScore/createCommunity.php");
var request = URLRequest(url:myUrl!);
request.httpMethod = "POST";

let postString = "communityname=\(communityName!)&code=\(communityCode)&email=\(myEmail!)";
request.httpBody = postString.data(using: String.Encoding.utf8);

let task = URLSession.shared.dataTask(with: request) { (data, response, error) in
    if let json = try! JSONSerialization.jsonObject(with: data!, options: .allowFragments) as? [String:AnyObject] {
        print (json["code"]);
        print (json["email"]);
        print (json["communityname"]);
    }
}

task.resume()

edited Oct 17, 2016 at 16:09

answered Oct 17, 2016 at 13:51

Jorge

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5 Comments

RDowns Over a year ago

I wasn't, because when I put that in it threw out an error. I have updated the code above with task.resume() in and the error message I am getting, thanks.

RDowns Over a year ago

/Users/richdowns/Desktop/One More Round/KeepScore/KeepScore/CreateNewCommunity.swift:65:66: Invalid conversion from throwing function of type '(Data?, URLResponse?, Error?) throws -> ()' to non-throwing function type '(Data?, URLResponse?, Error?) -> Void'

RDowns Over a year ago

I took out the 3x let commands and it just about worked - printing out this:Optional(S7LJEA) Optional(Optional("[email protected]")) Optional(Optional("testing")) why is it printing '&quot' though?

Jorge Over a year ago

I'd check the data sent from the sever itself in that case.

RDowns Over a year ago

sussed it. It just needed ! on the end of each object in the postString line

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