How can PHP and HTML files be combined effectively for web development?

To combine PHP and HTML files effectively for web development, you can use PHP to dynamically generate HTML content. This allows you to embed PHP code within HTML files to create dynamic web pages. By using PHP to handle logic and data processing, and HTML for structure and presentation, you can create dynamic and interactive web applications.

<!DOCTYPE html>
<html>
<head>
    <title>PHP and HTML Integration</title>
</head>
<body>
    <h1>Welcome, <?php echo "User"; ?>!</h1>
    <p>Today's date is <?php echo date('Y-m-d'); ?>.</p>
</body>
</html>