How can the use of PHP includes impact SEO and W3C validation on a website?

Using PHP includes can impact SEO by allowing for better organization of code and content, which can improve site speed and user experience. However, improper use of includes can lead to duplicate content issues if not handled correctly. In terms of W3C validation, including PHP files can make it easier to maintain clean and valid code by separating different sections of the website into individual files. 

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

Keywords

PHP includes SEO W3C validation website impact

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