Upload file while sending JSON from iOS to PHP script on web server

Question

I'm currently sending JSON data from my iOS app to a PHP script on my web server. Here's the code I'm using in iOS to send the data:

NSData* jsonData = [NSJSONSerialization dataWithJSONObject:newDatasetInfo options:kNilOptions error:&error];

NSMutableURLRequest *request = [[NSMutableURLRequest alloc] init];
[request setURL: [NSURL URLWithString:@"http://www.myserver.com/upload.php"]];
[request setHTTPMethod:@"POST"];
[request setValue:@"application/json" forHTTPHeaderField:@"Content-Type"];
[request setValue:@"application/json" forHTTPHeaderField:@"Accept"];
[request setHTTPBody:jsonData];

NSURLConnection *connection = [[NSURLConnection alloc] initWithRequest:request delegate:self];
[connection start];

And on the PHP side:

$handle = fopen('php://input','r');
$jsonInput = fgets($handle);
// Decoding JSON into an Array
$decoded = json_decode($jsonInput,true);

How can I modify both the iOS code and the PHP code to be able to also upload a file from the iOS app to the PHP code, that the PHP code then uses to write to disk locally? The file would be an audio file.

Thanks!

Have you checked http://stackoverflow.com/questions/10711481/sending-file-from-ios-to-php-using-post — Djumaka, Dec 30 '12 at 22:08
You'll want to send a POST request using the `x-www-form-urlencoded` encoding, then use the `$_FILES` variable in the PHP code. — , Dec 30 '12 at 22:33

score 0 · Accepted Answer · answered Dec 31 '12 at 01:55

I don't know much about Obj-C, but basically you need to use the multipart/form-data container, e.g.

Content-Type: multipart/form-data; boundary="xx"

--xx
Content-Type: audio/mpeg
Content-Length: 12345
Content-Disposition: attachment; name="file"; filename="music.mp3"

<contents of mp3>

--xx
Content-Disposition: form-data; name="data"
Content-Type: application/json
Content-Length: 123

<contents of json data>

--xx--

With PHP you can access the data using:

$_FILES['file'] // the uploaded file

$_POST['data'] // the json data

Upload file while sending JSON from iOS to PHP script on web server

1 Answers1