The following code where I try to find divs by class is not working for google search results, I have also tried for id.
include('simple_html_dom.php');
$dom = file_get_html("https://www.google.com/search?q=best+mug");
$all_divs = $dom->find("div[class='g']");
foreach ($all_divs as $div) {
echo $div->plaintext;
}