Uploading images to server PHP script from iPhone app
===

I am trying to upload two images to server using the below code

    NSUserDefaults *defaults = [NSUserDefaults standardUserDefaults];
    
        question = [defaults objectForKey:@"question"];
        userID = [defaults objectForKey:@"userID"];
        userName = [defaults objectForKey:@"firstName"];
        lastName = [defaults objectForKey:@"lastname"];
    
        NSData *thisImage = [defaults dataForKey:@"thisImage"];
        NSData *thatImage = [defaults dataForKey:@"thatImage"];
    
        NSString *numbVotes = [defaults objectForKey:@"votes"];
    
        NSURL *aUrl = [NSURL URLWithString:@"http://myurl/url.php"];
    
        NSMutableURLRequest *urlrequest = [NSMutableURLRequest requestWithURL:aUrl
                                                                  cachePolicy:NSURLRequestUseProtocolCachePolicy
                                                              timeoutInterval:60.0];
    
        [urlrequest setHTTPMethod:@"POST"];
    
        NSString *postString = [NSString stringWithFormat: @"user_id=%@&user=%@&question=%@&required_votes=%@", userID, userName, question, numbVotes];
    
        connection = [[NSURLConnection alloc] initWithRequest:urlrequest delegate:self startImmediately:NO];
    
        [connection scheduleInRunLoop:[NSRunLoop mainRunLoop] forMode:NSDefaultRunLoopMode];
        [connection start];
    
        NSString *boundary = [NSString stringWithString:@"---------------------------14737809831466499882746641449"];
        NSString *contentType = [NSString stringWithFormat:@"multipart/form-data; boundary=%@",boundary];
        [urlrequest addValue:contentType forHTTPHeaderField: @"Content-Type"];
    
        // now lets create the body of the post
    
        NSMutableData *image1 = [NSMutableData dataWithData:thisImage];
    
        [image1 appendData:[[NSString stringWithFormat:@"\r\n--%@\r\n",boundary] dataUsingEncoding:NSUTF8StringEncoding]];
    
      //  [image1 appendData:[[NSString stringWithString:@"Content-Disposition: form-data; name=\"userfile\"; filename=\"ipodfile.jpg\"\r\n"] dataUsingEncoding:NSUTF8StringEncoding]];
    
        [image1 appendData:[[NSString stringWithString:@"Content-Type: application/octet-stream\r\n\r\n"] dataUsingEncoding:NSUTF8StringEncoding]];
    
        [image1 appendData:[NSData dataWithData:thisImage]];
    
        [image1 appendData:[[NSString stringWithFormat:@"\r\n--%@--\r\n",boundary] dataUsingEncoding:NSUTF8StringEncoding]];
    
    
        NSMutableData *image2 = [NSMutableData dataWithData:thatImage];
    
        [image2 appendData:[[NSString stringWithFormat:@"\r\n--%@\r\n",boundary] dataUsingEncoding:NSUTF8StringEncoding]];
    
       // [image2 appendData:[[NSString stringWithString:@"Content-Disposition: form-data; name=\"userfile\"; filename=\"ipodfile.jpg\"\r\n"] dataUsingEncoding:NSUTF8StringEncoding]];
    
        [image2 appendData:[[NSString stringWithString:@"Content-Type: application/octet-stream\r\n\r\n"] dataUsingEncoding:NSUTF8StringEncoding]];
    
        [image2 appendData:[NSData dataWithData:thisImage]];
    
        [image2 appendData:[[NSString stringWithFormat:@"\r\n--%@--\r\n",boundary] dataUsingEncoding:NSUTF8StringEncoding]];
    
        // setting the body of the post to the reqeust
    
        [urlrequest setHTTPBody:[postString dataUsingEncoding:NSUTF8StringEncoding]];
    
        [urlrequest setHTTPBody:image1];
    
        [urlrequest setHTTPBody:image2];
    
        // now lets make the connection to the web
        NSData *returnData = [NSURLConnection sendSynchronousRequest:urlrequest returningResponse:nil error:nil];
    
        NSString *returnString = [[NSString alloc] initWithData:returnData encoding:NSUTF8StringEncoding];
    
        NSLog(@"%@",returnString);
    
    
        NSOperationQueue *queue = [[NSOperationQueue alloc] init];
    
        [NSURLConnection sendAsynchronousRequest:urlrequest queue:queue 
                               completionHandler:^(NSURLResponse *response, NSData *data, NSError *error) {
    
                                   if ([data length] >0 &&
    
                                       error == nil){
    
                                       html = [[NSString alloc] initWithData:data encoding:NSUTF8StringEncoding];
    
                                       dataRec = [[NSMutableData alloc] initWithData:data];
    
                                       NSString *string = [[NSString alloc] initWithData:dataRec encoding:NSUTF8StringEncoding];
    
                                       NSLog(@"HTML = %@", string);
                                   }
                                   else if ([data length] == 0 && error == nil){
    
                                       NSLog(@"Nothing was downloaded here.");
                                   }
                                   else if (error != nil){
    
                                       NSLog(@"Error happened here = %@", error);
                                   }
                               }];

But I always get failed to upload.

This is php script used on server.

    <?php
    include_once('clsData.php');
    
    $oData = new clsData();
    $dbconn = $oData->dbconn;
    
    $user_id= trim($_POST["user_id"]);
    $user_names = trim($_POST['user']);
    $question= trim($_POST["question"]);
    $required_votes= trim($_POST["required_votes"]);
    
    $success=0;
    $error=0;
    $ctime= $user_id . "_" . (microtime(true)*10000);
    /////////////// for this image
    
    $target_dir = "uploads/";
    
     $target_path_this = $target_dir . $ctime."_this.jpg"; 
     
    if(move_uploaded_file($_FILES['image_this']['tmp_name'], $target_path_this)) {
       $success++;
    } else{
        
    	echo json_encode(array ('value'=>"error",'label'=>"Failed to upload This file!"));
    	return;
    }
    
    
    /////////////////////////////for that image
    
    $target_path = "uploads/";
      $target_path = $target_path . $ctime."_that.jpg"; //basename( $_FILES['image_that']['name']); 
    
    
    if(move_uploaded_file($_FILES['image_that']['tmp_name'], $target_path)) {
          $success++;
    } else{
    	echo json_encode(array ('value'=>"error",'label'=>"Failed to upload That file!"));
       return;
    }
    
    
    $sql = "
    	INSERT INTO `thisthat_questions` (
    		user_id,
    		user,
    		required_votes,
    		question,
    		image_this,
    		image_that
    	) VALUES (
    		" . $user_id . ",
    		'" . $user_names . "',
    		" . $required_votes . ",
    		'" . $question . "',
    		'" . $ctime."_this.jpg" . "',
    		'" . $ctime."_that.jpg" . "'
    	)"; 
    
    
    if($result = mysql_query($sql,$dbconn))
    {
    	 $success++;
    } 
    else 
    {
    	echo json_encode(array ('value'=>"error",'label'=>"Database inser failed!"));
       return;
    } 
    
     echo json_encode(array ('value'=>"success",'label'=>"Asked Question!"));
    
    ?>