Connecting Swift with php server [duplicate] - swift

Question

This question already has answers here:
How can I get the Data from NSURLSession.sharedSession().dataTaskWithRequest
(2 answers)
Closed 6 years ago.
I'm trying to post from swift to php and then return json encoded data back to swift.
However, print(task.response) is nil. My link does what it is supposed to but my app still responds with nil. Any idea why?
let request = NSMutableURLRequest(URL: NSURL(string: "https://www.flashkase.com/API/createAccount.php")!)
request.HTTPMethod = "POST"
let postString = "username=frogg222"
request.HTTPBody = postString.dataUsingEncoding(NSUTF8StringEncoding)
let task = NSURLSession.sharedSession().dataTaskWithRequest(request) { data, response, error in
guard error == nil && data != nil else { // check for fundamental networking error
print("error=\(error)")
return
}
if let httpStatus = response as? NSHTTPURLResponse where httpStatus.statusCode != 200 { // check for http errors
print("statusCode should be 200, but is \(httpStatus.statusCode)")
print("response = \(response)")
}
let responseString = String(data: data!, encoding: NSUTF8StringEncoding)
print("responseString = \(responseString)")
}
task.resume()
print(task.response)
And my PHP file
<?php
include($_SERVER["DOCUMENT_ROOT"] . "/inc/database.php");
$arr = [];
$arr[] = 'Reporting for duty';
if($_SERVER['REQUEST_METHOD'] == 'POST'){
$arr[] = 'Post received';
$arr[] = $_POST['username'];
}
echo json_encode($arr);
?>
Update: How can I check for data after completion? If I uncomment sleep(3) it will display results...but that's obviously not ideal.
func postToServer(postURL: String, postString: String) {
let request = NSMutableURLRequest(URL: NSURL(string: postURL)!)
request.HTTPMethod = "POST"
request.HTTPBody = postString.dataUsingEncoding(NSUTF8StringEncoding)
let task = NSURLSession.sharedSession().dataTaskWithRequest(request){
data, response, error in
print("\(data), \(response), \(error)")
}
task.resume()
//sleep(3)
}
let sendURL: String = "https://www.flashkase.com/API/createAccount.php"
let sendData: String = "username=frogg222&email=fake123#gmail.com&password=fake1234"
postToServer(sendURL,postString: sendData)

Answer 1

dataTaskWithRequest is an asynchronous operation. Printing the response code immediately after the task starts will obviously print nil, as it hasn't had time to get a value. The completion handler already has a response object you can use, so inside your completion handler, call print(response) to see the properties and try to get a response code.