iOS 6 Safari Image Upload - Orientation Wrong

Question

I've built a web app which lets you upload a photo from the browser. When using this in iOS 6, photos seem to end up in landscape orientation even if they were taken in portrait when uploaded. Should I be doing some server side checks to get the image the right way round or is there some kind of iOS specific attributes/JavaScript I can apply to the upload form to fix this?

Update

As requested, here's the code I wrote to do this. Pre-requisites are that I'm using PHP and the WideImage library (this is a snippet from a much larger script so you could use something different for image manipulation if you like).

// Load Image Into Wide Image
$image=WideImage::load(IMG_UPLOAD_DIR.$result['name']);
$exif=exif_read_data(IMG_UPLOAD_DIR.$result['name']);
$orientation=$exif['Orientation'];
$result['orientation']=$orientation;

// Use Wide Image To Resize Images
$full=$image->resize(IMG_FULL_H,IMG_FULL_H);
$thumb=$image->resize(IMG_THUMB_W,IMG_THUMB_H);

switch($orientation){
    case 2:
        $full->mirror()->saveToFile(IMG_UPLOAD_DIR.$result['name'], 90);
        $thumb->mirror()->saveToFile(IMG_UPLOAD_DIR.$thumbName, 90);
        break;

    case 3:
        $full->rotate(-180)->saveToFile(IMG_UPLOAD_DIR.$result['name'], 90);
        $thumb->rotate(-180)->saveToFile(IMG_UPLOAD_DIR.$thumbName, 90);
        break;

    case 4:
        $full->rotate(180)->mirror()->saveToFile(IMG_UPLOAD_DIR.$result['name'], 90);
        $thumb->rotate(180)->mirror()->saveToFile(IMG_UPLOAD_DIR.$thumbName, 90);
        break;

    case 5:
        $full->rotate(90)->mirror()->saveToFile(IMG_UPLOAD_DIR.$result['name'], 90);
        $thumb->rotate(90)->mirror()->saveToFile(IMG_UPLOAD_DIR.$thumbName, 90);
        break;

    case 6:
        $full->rotate(90)->saveToFile(IMG_UPLOAD_DIR.$result['name'], 90);
        $thumb->rotate(90)->saveToFile(IMG_UPLOAD_DIR.$thumbName, 90);
        break;

    case 7:
        $full->rotate(-90)->saveToFile(IMG_UPLOAD_DIR.$result['name'], 90);
        $thumb->rotate(-90)->saveToFile(IMG_UPLOAD_DIR.$thumbName, 90);
        break;

    case 8:
        $full->rotate(-90)->saveToFile(IMG_UPLOAD_DIR.$result['name'], 90);
        $thumb->rotate(-90)->saveToFile(IMG_UPLOAD_DIR.$thumbName, 90);
        break;

    default:
        $full->saveToFile(IMG_UPLOAD_DIR.$result['name'], 90);
        $thumb->saveToFile(IMG_UPLOAD_DIR.$thumbName, 90);
        break;
}

Answer 1

Check the images exif metadata, iPhone camera takes 'rotated' images.

Answer 2

You might try this jQuery plugin ( at the bottom of this thread )

IOS6 and Safari Photo Uploading - File API + Canvas + jQuery Ajax Uploading and Resizing Files Asynchronously