- floor: documentation ( source)
<?php
$page = 7;
$max_page = 6;
$num_of_posts = 6;
if ($page > $max_page) {
$page = $page - floor($page/$max_page)*$max_page;
}
$page -= 1;
echo $page;
echo "\n";
echo $page*$num_of_posts;