Водяной знак на картинку

function getWatermarkFilter(){
    return Array(array("name" => "watermark", "position" => "center", "size" => "real", 'type' => 'image', "file" => $_SERVER['DOCUMENT_ROOT'] . "/images/transparent.png"));

}

function putWatermark($picId,$width,$height,getWatermarkFilter(){
    $PICTURE = CFile::ResizeImageGet(
        $picId,
        Array(
            'width' => $width,
            'height' => $height
        ),
        BX_RESIZE_IMAGE_EXACT,
        true,
        $filter
    );

    return $PICTURE['src'];
    
}