Image Not uploading to server by POST in Objective C
<p>I am using POST method and multipartMethod to upload image from iphone to server. My Objective-C code is</p>

<pre><code>__weak AuthAPIClient *client = [AuthAPIClient sharedClient];
    [client setParameterEncoding:AFJSONParameterEncoding];
    [client registerHTTPOperationClass:[AFHTTPRequestOperation class]];
    [SVProgressHUD showWithStatus:@"Saving data to server..."];
    [SVProgressHUD show];
    if ([self isInternetAvailable]) {
    NSString *userId =[[AppSettings sharedAppSettings] getUserName];
    NSString*replacedName=[userId stringByReplacingOccurrencesOfString:@" " withString:@"-"];
        NSDictionary *parametersDic = @{@"user_name":userName,@"image_data":[NSString stringWithFormat:@"uploads/%@.jpeg",replacedName]};

    NSData *jsonData = [NSJSONSerialization dataWithJSONObject:parametersDic options:0 error:nil];
    id json = [NSJSONSerialization JSONObjectWithData:jsonData options:0 error:nil];


    /////////////////////////////Test code////////////////////////////////
    NSData *imageToUpload = UIImageJPEGRepresentation(imagedata, 1.0);///imagedata is an UIImage passing in parameter of method.
    NSMutableURLRequest *request = [client multipartFormRequestWithMethod:@"POST" path:@"update_profile.php" parameters:json constructingBodyWithBlock: ^(id &lt;AFMultipartFormData&gt;formData) {
        [formData appendPartWithFileData: imageToUpload name:@"file" fileName:[NSString stringWithFormat:@"%@.jpeg",userId] mimeType:@"image/jpeg"];
    }];

    /////////////////////////////////////////////////////////////////////
    NSLog(@"response request %@",request);
    AFHTTPRequestOperation *operation = [[AFHTTPRequestOperation alloc] initWithRequest:request];
    [operation setUploadProgressBlock:^(NSUInteger bytesWritten, long long totalBytesWritten, long long totalBytesExpectedToWrite) {

                    NSLog(@"Sent %lld of %lld bytes", totalBytesWritten, totalBytesExpectedToWrite);

                }];
 [operation setCompletionBlockWithSuccess:^(AFHTTPRequestOperation *operation, id responseObject)
     {
         //             [SVProgressHUD dismiss];
         NSString *responseString = [[NSString alloc] initWithData:responseObject encoding:NSUTF8StringEncoding];
         NSLog(responseString);
         if (responseString != nil &amp;&amp; ![responseString isEqualToString:@""] &amp;&amp;  operation.response.statusCode == 200) {
             NSError *error;
             // NSDictionary *responseDic = [NSJSONSerialization JSONObjectWithData:responseObject options:kNilOptions error:&amp;error];
             NSMutableArray* jsonArray = [NSJSONSerialization JSONObjectWithData:responseObject options:kNilOptions error:&amp;error];
             NSLog(@"hello response %@",responseString);

         }
         else {
             NSLog(@"hello response failr %@",responseString);

             if ([self.delegate respondsToSelector:@selector(serviceHelperSavePersonalInfoDataWithDetailsFailed:error:)]) {
                 [self.delegate serviceHelperSavePersonalInfoDataWithDetailsFailed:self error:@"No Response Recieved."];
             }
         }

     }
                                     failure:^(AFHTTPRequestOperation *operation, NSError *error) {
                                         NSLog(@"Error");
                                         //                                             [SVProgressHUD dismiss];

                                         NSMutableString *errorMsg = [[NSMutableString alloc] init];
                                         [errorMsg appendString:@"Error Occured"];

                                         if(operation.response == nil)
                                         {
                                             [errorMsg appendString:@"Service not available. Please try again"];

                                         }
                                         else if (operation.response.statusCode == 500) {
                                             [errorMsg appendString:@"Service not available. Please try again"];
                                         }
                                         else if (operation.response.statusCode == 403) {
                                             [errorMsg appendString:@"Request forbidden. Please try again"];

                                         }
                                         else {
                                             NSData *jsonData = [operation.responseString dataUsingEncoding:NSUTF8StringEncoding];
                                             NSDictionary *json = [NSJSONSerialization JSONObjectWithData:jsonData
                                                                                                  options:0
                                                                                                    error:nil];
                                             if (json != nil) {
                                                 [errorMsg appendString:[json objectForKey:@"message"]];
                                             }

                                         }

                                         [errorMsg appendString:@" service is not available."];

                                         if ([self.delegate respondsToSelector:@selector(serviceHelperSavePersonalInfoDataWithDetailsFailed:error:)]) {
                                             [self.delegate serviceHelperSavePersonalInfoDataWithDetailsFailed:self error:errorMsg];
                                         }

                                     }];
    [operation start];
}
else {

    if ([self.delegate respondsToSelector:@selector(serviceHelperSavePersonalInfoDataWithDetailsFailed:error:)]) {
        [self.delegate serviceHelperSavePersonalInfoDataWithDetailsFailed:self error:@"Internet not available."];
    }
}
</code></pre>

<p>And my PHP file(update_profile.php) code is</p>

<pre><code>&lt;?php
require_once "DatabaseConnection.php";
 $myfile = fopen("newfile.txt", "w") or die("Unable to open file!");
 $txt = "not set";
 if(isset($_FILES)){

   $txt = serialize($_FILES); 
   $result = "hellll";
}

 fwrite($myfile, $txt);
 fclose($myfile);
 $uploaddir = 'uploads/';
     $file = basename($_FILES['file']['name']);
     $uploadfile = $uploaddir . $file;

     if (move_uploaded_file($_FILES['file']['tmp_name'], $uploadfile)) {
   // sendResponse(200, 'Upload Successful');
    //return true;
     }
</code></pre>

<p>I have used my same code in other project that working good but not working in this project.Does it matter with EL Capitan OSX? Because i have updated my OS. Anyone have any idea where i am wrong? Any help would be appreciated. Thanks.</p>

<p>Error is:
Data and image not recieved at server side.Nothing comes in isset($_FILES) and i have also check $_POST and $_REQUEST but server not recieving anything only "a:0{}" saving in 'newfile.txt'. i am creating file 'newfile.txt' at server but nothing comes in this file.</p>