Sending UIImage to MySQL

Hey guys, does anybody know how to send an image (from a UIImageView) to a mysql database and then pull it back down? I know to do with text but when it comes to the image I get stuck. Any ideas? Thank you.

 

Ya I can convert it to the BLOB type however, I am sending it image to the server along with some text and when I go to send to them together it sends two different sets of data when I only want it to send one set of data.

Code:

NSMutableURLRequest *req = [NSMutableURLRequest requestWithURL:url cachePolicy:NSURLRequestReloadIgnoringCacheData timeoutInterval:20];
		[req setHTTPMethod:@"POST"];
		[req setValue:@"application/x-www-form-urlencoded" forHTTPHeaderField:@"Content-Type"];

Code:

[req setValue:length forHTTPHeaderField:@"Content-Length"];
		[req setHTTPBody:[postData dataUsingEncoding:NSASCIIStringEncoding]];

The above code is how I am sending my text data, somehow I want to incorporate the image into my postData (which is an NSString)