Creates a vertical mirror image by reflecting the pixels around the central x-axis while rotating them 90-degrees. This method is available if Imagick has been compiled against ImageMagick version 6.2.9 or newer.
function transposeImage($image_path)
{
    $imagick = new \Imagick(realpath($image_path));
    $imagick->transposeImage();
    header("Content-Type: image/jpg");
    echo $imagick->getImageBlob();
}