Call Php from Swift 3 iOS - php

Question

Hello I have update my old swift app in the new version of swift 3, The code was connected to a php page by passing values ​​in post and then returning a json message since I updated the app to swift 3 xcode me from the following errors, How can i fix these errors?
Error:
Swift Code:
let URL_SAVE_TEAM = "http://localhost/ios-login.php"
var email:String = "";
var password:String = "";
func PrintValue(){
// print(username);
//print(password);
}
func Login() -> Bool{
//created NSURL
let requestURL = NSURL(string: URL_SAVE_TEAM)
//creating NSMutableURLRequest
let request = NSMutableURLRequest(URL: requestURL)
//setting the method to post
request.HTTPMethod = "POST"
//getting values from text fields
//creating the post parameter by concatenating the keys and values from text field
let postParameters = "email="+email+"&password="+password;
//adding the parameters to request body
request.HTTPBody = postParameters.dataUsingEncoding(NSUTF8StringEncoding)
//creating a task to send the post request
let task = NSURLSession.sharedSession().dataTaskWithRequest(request){
data, response, error in
if error != nil{
print("error is \(error)")
return;
}
//parsing the response
do {
//converting resonse to NSDictionary
let myJSON = try NSJSONSerialization.JSONObjectWithData(data!, options: .MutableContainers) as? NSDictionary
//parsing the json
if let parseJSON = myJSON {
//creating a string
var msg : String!
//getting the json response
msg = parseJSON["message"] as! String?
//printing the response
print(msg)
}
} catch {
print(error)
}
}
//executing the task
task.resume()
return false;
}
Xcode Image of Error:
PHP CODE:
<?php
header('Content-Type: application/json');
$email= $_POST['email'];
$password = $_POST['password'];
$ris='Ti rispondo dal server zio';
echo json_encode($ris);
// echo "prova";
?>

Answer 1

I would write this more swiftly :)
func Login() -> Bool{
//created URL
guard let requestURL = URL(string: URL_SAVE_TEAM) else { return false }
//creating URLRequest
var request = URLRequest(url: requestURL)
//setting the method to post
request.httpMethod = "POST"
//getting values from text fields
//creating the post parameter by concatenating the keys and values from text field
let postParameters = "email=\(email)&password=\(password)"
//adding the parameters to request body
request.httpBody = postParameters.data(using: .utf8)
//creating a task to send the post request
let session = URLSession.shared
let task = session.dataTask(with: request) {
data, response, error in
guard error == nil else {
print("error is \(error!.localizedDescription)")
return
}
guard let data = data else {
print("No data was returned by the request!")
return
}
//parsing the response
do {
//converting resonse to NSDictionary
let myJSON = try JSONSerialization.jsonObject(with: data, options: .allowFragments) as? Dictionary<String, String?>
//parsing the json
guard let parseJSON = myJSON, let msg = parseJSON["message"] as? String else {
print("Error parsing data")
return
}
//printing the response
print(msg)
} catch {
print(error)
}
}
//executing the task
task.resume()
return false
}
You may think to add a completion handler to your function to handle the login success!