rotate an image to the correct orientation

image_rotation.php

        $exif = (int)$image->getImageProperty("exif:Orientation");
        switch($exif) {
            case 2: 
                $image->flopImage();
                break;
            case 3: 
                $image->rotateImage('black', 180);
                break;
            case 4: 
                $image->flipImage();
                break;
            case 5: 
                $image->transposeImage();
                break;
            case 6: 
                $image->rotateImage('black', 90);
                break;
            case 7: 
                $image->transverseImage();
                break;
            case 8: 
                $image->rotateImage('black', -90);
                break;

        }