Example

function affineTransformImage($image_path)
{
    $imagick = new \Imagick(realpath($image_path));
    $draw = new \ImagickDraw();

    $angle = 40 ;

    $affineRotate = array(
        "sx" => cos($angle), "sy" => cos($angle),
        "rx" => sin($angle), "ry" => -sin($angle),
        "tx" => 0, "ty" => 0,
    );

    $draw->affine($affineRotate);

    $imagick->affineTransformImage($draw);

    header("Content-Type: image/jpeg");
    echo $imagick->getImageBlob();
}