What is the significance of using the correct HTML structure and syntax when integrating PHP scripts?

Using the correct HTML structure and syntax when integrating PHP scripts is crucial for ensuring that the PHP code executes properly and is rendered correctly on the webpage. Incorrect HTML structure or syntax can lead to errors in the PHP script execution or cause the webpage to display incorrectly.

<!DOCTYPE html>
<html>
<head>
    <title>PHP Integration</title>
</head>
<body>
    <h1>Welcome to our website</h1>
    
    <?php
        // PHP code goes here
        echo "Hello, World!";
    ?>
</body>
</html>