How can understanding the difference between PHP and HTML elements impact the use of include in PHP?

Understanding the difference between PHP and HTML elements is crucial when using include in PHP because PHP files should only contain PHP code, while HTML files can contain a mix of HTML and PHP code. When using include in PHP, it is important to ensure that the included file only contains PHP code to avoid any syntax errors or unexpected behavior. 

<?php
include 'header.php';
include 'content.php';
include 'footer.php';
?>

Keywords

PHP HTML elements include web development server-side programming

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