How can PHP be used to create a responsive layout for a webpage with a menu on one side and content on the other?

To create a responsive layout for a webpage with a menu on one side and content on the other using PHP, you can utilize CSS frameworks like Bootstrap to easily create a responsive grid system. By using Bootstrap classes for columns, you can define the layout for different screen sizes. Additionally, you can use PHP to dynamically generate the menu items or content based on data from a database.

<!DOCTYPE html>
<html>
<head>
    <title>Responsive Layout</title>
    <link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/bootstrap/4.5.2/css/bootstrap.min.css">
</head>
<body>
    <div class="container">
        <div class="row">
            <div class="col-md-3">
                <h2>Menu</h2>
                <?php
                    // PHP code to generate menu items
                    $menu_items = array("Home", "About", "Services", "Contact");
                    foreach($menu_items as $item) {
                        echo "<p><a href='#'>$item</a></p>";
                    }
                ?>
            </div>
            <div class="col-md-9">
                <h2>Content</h2>
                <?php
                    // PHP code to generate content
                    echo "<p>Lorem ipsum dolor sit amet, consectetur adipiscing elit.</p>";
                ?>
            </div>
        </div>
    </div>
</body>
</html>