Can anyone find the error in this POST NSMutableURLRequest to a PHP script?

I try to send data to this php script:

 mb_internal_encoding("UTF-8");

    if(isset($_POST['format']) && isset($_POST['category']) && isset($_POST['title']) && isset($_POST['description']) && isset($_FILES['photo']) {
     save($_POST['category'], $_POST['title'], $_POST['description'], $_FILES['photo']); 
    } else {
     echo "There was an error, a field does not exist, please try again!<br />";
     echo "format = " . $_POST['format'] . "<br />";
     echo "category = " . $_POST['category'] . "<br />";
     echo "title = " . $_POST['title'] . "<br />";
     echo "description = " . $_POST['description'] . "<br />";
     echo "photo =" . $_FILES['photo'] . ;
    }
...
...

And I'm trying to send a syncronousRequest with this Objc code from iPhone:

//creating the url request:
 NSURL *cgiUrl = [NSURL URLWithString:@"http://www.hhh.com/uploading.php"];开发者_开发技巧
 NSMutableURLRequest *postRequest = [NSMutableURLRequest requestWithURL:cgiUrl];

 //adding header information:
 [postRequest setHTTPMethod:@"POST"];

 NSString *stringBoundary = [NSString stringWithString:@"0xKhTmLbOuNdArY"];
 NSString *contentType = [NSString stringWithFormat:@"multipart/form-data; boundary=%@",stringBoundary];
 [postRequest addValue:contentType forHTTPHeaderField: @"Content-Type"];


 //setting up the body:
 NSMutableData *postBody = [NSMutableData data];
 [postBody appendData:[[NSString stringWithFormat:@"--%@\r\n",stringBoundary] dataUsingEncoding:NSUTF8StringEncoding]];
 [postBody appendData:[[NSString stringWithString:@"Content-Disposition: form-data; name=\"category\"\r\n\r\n"] dataUsingEncoding:NSUTF8StringEncoding]];
 [postBody appendData:[[NSString stringWithString:@"iPhone"] dataUsingEncoding:NSUTF8StringEncoding]];
 [postBody appendData:[[NSString stringWithFormat:@"\r\n--%@\r\n",stringBoundary] dataUsingEncoding:NSUTF8StringEncoding]];
 [postBody appendData:[[NSString stringWithString:@"Content-Disposition: form-data; name=\"format\"\r\n\r\n"] dataUsingEncoding:NSUTF8StringEncoding]];
 [postBody appendData:[[NSString stringWithString:@"jpg"] dataUsingEncoding:NSUTF8StringEncoding]];
 [postBody appendData:[[NSString stringWithFormat:@"\r\n--%@--\r\n",stringBoundary] dataUsingEncoding:NSUTF8StringEncoding]];
 [postBody appendData:[[NSString stringWithString:@"Content-Disposition: form-data; name=\"title\"\r\n\r\n"] dataUsingEncoding:NSUTF8StringEncoding]];
 [postBody appendData:[[NSString stringWithString:self.theTitle] dataUsingEncoding:NSUTF8StringEncoding]];
 [postBody appendData:[[NSString stringWithFormat:@"\r\n--%@--\r\n",stringBoundary] dataUsingEncoding:NSUTF8StringEncoding]];
 [postBody appendData:[[NSString stringWithString:@"Content-Disposition: form-data; name=\"description\"\r\n\r\n"] dataUsingEncoding:NSUTF8StringEncoding]];
 [postBody appendData:[[NSString stringWithString:self.theCaption] dataUsingEncoding:NSUTF8StringEncoding]];
 [postBody appendData:[[NSString stringWithFormat:@"\r\n--%@\r\n",stringBoundary] dataUsingEncoding:NSUTF8StringEncoding]];
 [postBody appendData:[[NSString stringWithFormat:@"Content-Disposition: form-data; name=\"photo\"; filename=\"%@.jpg\"\r\n", self.theTitle] dataUsingEncoding:NSUTF8StringEncoding]];
 [postBody appendData:[[NSString stringWithString:@"Content-Type: application/octet-stream\r\n\r\n"] dataUsingEncoding:NSUTF8StringEncoding]];
 [postBody appendData:[NSData dataWithData:UIImageJPEGRepresentation(resizedImage(self.myPhoto, CGRectMake(0, 0, 600, 800)), 0.5)]];
 [postBody appendData:[[NSString stringWithFormat:@"\r\n--%@--\r\n",stringBoundary] dataUsingEncoding:NSUTF8StringEncoding]];

 [postRequest setHTTPBody:postBody];

 NSError *theError;
 NSData *returnData = [ NSURLConnection sendSynchronousRequest: postRequest returningResponse: nil error:&theError ];
 NSString *returnDataString = [[NSString alloc] initWithData:returnData encoding:NSUTF8StringEncoding];

 NSLog(@"[DEBUG]... response from request: %@", returnDataString);

But the answer is:

[DEBUG]... response from request: There was an error, all field not existe, please try again!

format =

category =

title =

description =

photo =latitude =

longitude =

What am I doing wrong? because what I see is that no field is received.

You'd probably get a lot further if your PHP script logged what it actually did receive rather than how it interpreted it.

Well ... one problem was solved. The format between parameters must be like this:

@"\r\n--%@\r\n"

and I was sending:

@"\r\n--%@--\r\n" // two more scores

Still now I can't send the data. I've made a new script with only this content in the same server.

<?php

        echo "format = " . $_POST['format'];
      echo "[NEXT]... category = " . $_POST['category'];
      echo "[NEXT]... title = " . $_POST['title'];
      echo "[NEXT]... description = " . $_POST['description'];
      echo "[NEXT]... latitude = " . $_POST['latitude'];
      echo "[NEXT]... longitude =" . $_POST['longitude'];

?>

and copied the code to the original script (which was written by other guy) .

But now I see that one script receives the data and the original can't.

Could it be a fle encoding problem?