What are some best practices for generating internet pages using PHP?

When generating internet pages using PHP, it is important to follow best practices to ensure security, efficiency, and maintainability. Some key best practices include using proper HTML structure, separating PHP logic from presentation using templates, sanitizing user input to prevent security vulnerabilities, and optimizing code for performance.

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Page Title</title>
</head>
<body>
    <header>
        <h1>Welcome to My Website</h1>
    </header>
    <nav>
        <ul>
            <li><a href="#">Home</a></li>
            <li><a href="#">About</a></li>
            <li><a href="#">Contact</a></li>
        </ul>
    </nav>
    <main>
        <?php
        // PHP logic here
        ?>
    </main>
    <footer>
        <p>© <?php echo date("Y"); ?> My Website</p>
    </footer>
</body>
</html>