In PHP, how can developers effectively manage a sequence of pages or images before loading the main content of a website?

To effectively manage a sequence of pages or images before loading the main content of a website in PHP, developers can use a simple conditional statement to check for a specific page or image before displaying the main content. This can help create a smooth and organized user experience by controlling the flow of content loading on the website.

<?php
// Check if the current page is a specific page or image
if ($currentPage == 'page1' || $currentPage == 'image1') {
    // Display the specific page or image
    include($currentPage . '.php');
} else {
    // Display the main content of the website
    include('main_content.php');
}
?>