Specific php and swift code for image uploading to sftp - php

Question

php script and xcode shows that here is
****** response data =
Notice: Undefined index: userId in /home/raimonds/script.php on line 36
{"Message":"First name field empty","Status":"Error","userId":null}
so here is the php code :
<?php
if(!empty($_POST["firstName"])){
$firstName = isset($_POST["firstName"]) ? $_POST["firstName"] : "";
$lastName = isset($_POST["lastName"]) ? $_POST["lastName"] : "";
$userId = isset($_POST["userId"]) ? $_POST["userId"] : "";
$target_dir = "uploads/";
if(!file_exists($target_dir))
{
mkdir($target_dir, 0777, true);
}
$target_dir = $target_dir . "/" . basename($_FILES["file"]["name"]);
if (move_uploaded_file($_FILES["file"]["tmp_name"], $target_dir)) {
echo json_encode([
"Message" => "The file ". basename( $_FILES["file"]["name"]). " has been uploaded.",
"Status" => "OK",
"userId" => $_POST["userId"]
]);
} else {
echo json_encode([
"Message" => "Sorry, there was an error uploading your file.",
"Status" => "Error",
"userId" => $_POST["userId"]
]);
}
}else{
echo json_encode([
"Message" => "First name field empty",
"Status" => "Error",
"userId" => $_POST["userId"]
]);
}
?>
can you please help me? xcode part was:
//
// ViewController.swift
// ImageUploader
//
// Created by Raimonds on 14/05/15.
// Copyright (c) 2015 Raimonds. All rights reserved.
//
import UIKit
class ViewController: UIViewController, UIImagePickerControllerDelegate,
UINavigationControllerDelegate
{
#IBOutlet weak var myImageView: UIImageView!
#IBOutlet weak var myActivityIndicator: UIActivityIndicatorView!
override func viewDidLoad() {
super.viewDidLoad()
// Do any additional setup after loading the view, typically from a nib.
}
override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
// Dispose of any resources that can be recreated.
}
#IBAction func uploadButtonTapped(sender: AnyObject) {
myImageUploadRequest()
}
#IBAction func selectPhotoButtonTapped(sender: AnyObject) {
var myPickerController = UIImagePickerController()
myPickerController.delegate = self;
myPickerController.sourceType = UIImagePickerControllerSourceType.PhotoLibrary
self.presentViewController(myPickerController, animated: true, completion: nil)
}
func imagePickerController(picker: UIImagePickerController, didFinishPickingMediaWithInfo info: [NSObject : AnyObject])
{
myImageView.image = info[UIImagePickerControllerOriginalImage] as?
UIImage
self.dismissViewControllerAnimated(true, completion: nil)
}
func myImageUploadRequest()
{
let myUrl = NSURL(string: "http://raimonds.gtd.lv/script.php");
let request = NSMutableURLRequest(URL: myUrl!);
request.HTTPMethod = "POST";
let param = [
"firstName" : "firstName",
"lastName" : "lastName",
"userId" : "9"
]
let boundary = generateBoundaryString()
request.setValue("multipart/form-data: boundary=\(boundary)" , forHTTPHeaderField: "Content-Type")
let imageData = UIImageJPEGRepresentation(myImageView.image, 1)
if (imageData==nil) {return; }
request.HTTPBody = createBodyWithParameters(param, filePathKey: "file", imageDataKey: imageData, boundary: boundary)
myActivityIndicator.startAnimating();
let task = NSURLSession.sharedSession().dataTaskWithRequest(request) {
data, response, error in
if error != nil {
println("error=\(error)")
return
}
println("******* response = \(response)")
let responseString = NSString(data: data, encoding: NSUTF8StringEncoding)
println("****** response data = \(responseString!)")
var err: NSError?
var json = NSJSONSerialization.JSONObjectWithData(data, options: .MutableContainers, error: &err)
as? NSDictionary
dispatch_async(dispatch_get_main_queue(),{
self.myActivityIndicator.stopAnimating()
self.myImageView.image = nil;
});
}
task.resume()
}
func createBodyWithParameters(parameters: [String: String]?, filePathKey: String?, imageDataKey: NSData, boundary: String) -> NSData {
var body = NSMutableData();
if parameters != nil {
for (key, value) in parameters! {
body.appendString("--\(boundary)\r\n")
body.appendString("Content-Disposition: form-data; name=\"\(key)\"\r\n\r\n")
}
}
let filename = "user-profile.jpg"
let mimetype = "image/jpg"
body.appendString("--\(boundary)\r\n")
body.appendString("Content-Disposition: form-data; name=\"\(filePathKey!)\"; filename=\"\(filename)\"\r\n")
body.appendString("Content-Type: \(mimetype)\r\n\r\n")
body.appendData(imageDataKey)
body.appendString("\r\n")
body.appendString("--\(boundary)--\r\n")
return body
}
func generateBoundaryString() -> String {
return "Boundary--\(NSUUID().UUIDString)"
}
}
extension NSMutableData {
func appendString(string: String) {
let data = string.dataUsingEncoding(NSUTF8StringEncoding, allowLossyConversion: true)
appendData(data!)
}
}

Answer 1

You have some problem in your swift code, because you don't send POST data into php
Try to look how send swift POST request:
http://ios-blog.co.uk/tutorials/swift-how-to-send-a-post-request-to-a-php-script/
You need something like that:
var url: NSURL = NSURL(string: "http://raimonds.gtd.lv/script.php")!
var request:NSMutableURLRequest = NSMutableURLRequest(URL:url)
request.HTTPMethod = "POST"
var bodyData = "firstName=firstName&lastName=lastName&userId=9"
request.HTTPBody = bodyData.dataUsingEncoding(NSUTF8StringEncoding);
NSURLConnection.sendAsynchronousRequest(request, queue: NSOperationQueue.mainQueue())
{
(response, data, error) in
println(response)
}