Excuse me, what is the principle of this paging?

Question

is because page.php will be refreshed every time you click "Next Page", and then href="page.php?page='.($page 1).'" Pass the value of "page" to $page=isset($_GET['page'])?(int)$_GET['page']:1;? , equivalent to constantly looping page.php?

Answer 1

Which course is it~~