Page ID & wp_dequeue_script

One of the plugins I’m using is adding a very large js file to every page. Only 7 pages should be loading the script. I’m thinking

$page_id=page_id();
$page_array=array(##,##,##);

if(!in_array($page_id,$page_array)){

      wp_dequeue_script($handle);

}

for my functions file. I have no idea how to get the page id. Any help?