Hello,

Here is a code snippet that uploads an image to a web server:

Code:
//imageview is a UIImageView 
 NSData *imageData = UIImageJPEGRepresentation(imageview.image, 100);
    
    
	// setting up the URL to post to
	NSString *urlString = @"http://example.com/upload.php";
	
	// setting up the request object now
	
	NSMutableURLRequest *request = [[[NSMutableURLRequest alloc] init] autorelease];
	[request setURL:[NSURL URLWithString:urlString]];
	[request setHTTPMethod:@"POST"];
    
	/*
	 add some header info now
	 we always need a boundary when we post a file
	 also we need to set the content type
	 
	 You might want to generate a random boundary.. this is just the same 
	 as my output from wireshark on a valid html post
	 */
	NSString *boundary = [NSString stringWithString:@"---------------------------14737809831466499882746641449"];
	NSString *contentType = [NSString stringWithFormat:@"multipart/form-data; boundary=%@",boundary];
	[request addValue:contentType forHTTPHeaderField: @"Content-Type"];
	
	/*
	 now lets create the body of the post
	 */
    
	NSMutableData *body = [NSMutableData data];
	[body appendData:[[NSString stringWithFormat:@"\r\n--%@\r\n",boundary] dataUsingEncoding:NSUTF8StringEncoding]];	
	[body appendData:[[NSString stringWithString:@"Content-Disposition: form-data; name=\"userfile\"; filename=\".jpg\"\r\n"] dataUsingEncoding:NSUTF8StringEncoding]];
	[body appendData:[[NSString stringWithString:@"Content-Type: application/octet-stream\r\n\r\n"] dataUsingEncoding:NSUTF8StringEncoding]];
	[body appendData:[NSData dataWithData:imageData]];
	[body appendData:[[NSString stringWithFormat:@"\r\n--%@--\r\n",boundary] dataUsingEncoding:NSUTF8StringEncoding]];
	// setting the body of the post to the reqeust
	[request setHTTPBody:body];
	
	// now lets make the connection to the web
	
	NSData *returnData = [NSURLConnection sendSynchronousRequest:request returningResponse:nil error:nil];
	self.returnString = [[NSString alloc] initWithData:returnData encoding:NSUTF8StringEncoding];
upload this php file to where you set the URL to post to

Code:

<?php  
$file_name = substr ( md5(uniqid(rand(),1)), 5, 15); 


$uploaddir = './uploads/';
$file = basename($_FILES['userfile']['name']);
$newname = $file_name . $file;
$uploadfile = $uploaddir . $newname;

if (move_uploaded_file($_FILES['userfile']['tmp_name'], $uploadfile)) {
        $imagepath =  "http://example.com/uploads/{$newname}";
}
print $imagepath;
?>
If you have any questions please don't hesitate to ask.