What are the potential pitfalls of mixing PHP and HTML code when generating META TAGS dynamically?

Mixing PHP and HTML code when generating META TAGS dynamically can lead to messy and hard-to-maintain code. It can also make it difficult to debug any issues that may arise. To solve this issue, it's recommended to separate PHP logic from HTML presentation by using PHP to generate the META TAGS dynamically and then outputting them within the HTML document.

<?php
$meta_tags = [
    'title' => 'Page Title',
    'description' => 'Page Description',
    'keywords' => 'keyword1, keyword2, keyword3'
];
?>

<!DOCTYPE html>
<html>
<head>
    <title><?php echo $meta_tags['title']; ?></title>
    <meta name="description" content="<?php echo $meta_tags['description']; ?>">
    <meta name="keywords" content="<?php echo $meta_tags['keywords']; ?>">
</head>
<body>
    <!-- Your HTML content here -->
</body>
</html>