PHPThumb - Rotate image based on orientation

gistfile1.txt

		// Get PHPThumb from: https://github.com/masterexploder/PHPThumb
		App::import('Vendor', 'PHPThumb', array('file' => 'PHPThumb/ThumbLib.inc.php'));
		try {
			$image = PhpThumbFactory::create($file_path, array('jpegQuality' => 75));
		} catch (Exception $e) {
			$this->outputError(array('unknown_error' => 'unknown_error'));
		}
		$exif = @exif_read_data($file_path);
		if (!empty($exif['Orientation'])) {
			$orientation = $exif['Orientation'];
			switch ($orientation) {
				case 3:
					$image->rotateImageNDegrees(180);
					break;
				case 6:
					$image->rotateImage('CCW');
					break;
				case 8:
					$image->rotateImage('CW');
					break;
				default:
					break;
			}
		}
		$image->save($file_path, 'jpg');