How can PHP developers effectively clone menus and modify them without affecting the overall website layout?

To effectively clone menus and modify them without affecting the overall website layout, PHP developers can create separate menu files that can be included in the main layout file. This way, each menu can be modified independently without impacting the rest of the website. By using PHP include or require functions, developers can easily clone and customize menus without duplicating code or affecting the overall layout.

// menu.php
<ul>
    <li><a href="#">Home</a></li>
    <li><a href="#">About</a></li>
    <li><a href="#">Services</a></li>
    <li><a href="#">Contact</a></li>
</ul>

// main_layout.php
<!DOCTYPE html>
<html>
<head>
    <title>Website</title>
</head>
<body>
    <header>
        <?php include 'menu.php'; ?>
    </header>
    
    <main>
        <h1>Welcome to our website!</h1>
        <p>Lorem ipsum dolor sit amet, consectetur adipiscing elit.</p>
    </main>
</body>
</html>