How can HTML errors impact the functionality of PHP scripts, and what best practices can be followed to prevent such errors?

HTML errors can impact the functionality of PHP scripts by causing unexpected behavior or breaking the layout of the webpage. To prevent such errors, it is essential to ensure that the HTML code is well-formed and valid. One best practice is to use an HTML validator tool to check for any syntax errors or missing tags in the code.

<!DOCTYPE html>
<html>
<head>
    <title>Example Page</title>
</head>
<body>
    <?php
        // PHP code here
    ?>
</body>
</html>