How can PHP be used to create a navigation system that allows for automatic linking of recurring keywords within website content?

To create a navigation system that automatically links recurring keywords within website content, we can use PHP to scan the content for specific keywords and then dynamically generate hyperlinks for those keywords. This can improve user experience by providing easy access to related content and can also help with SEO by creating internal links. 

<?php
$content = "Lorem ipsum dolor sit amet, consectetur adipiscing elit. Sed vitae semper mauris. Duis auctor dolor eu magna venenatis. Sed vitae semper mauris.";

$keywords = array("Lorem", "ipsum", "dolor");

foreach($keywords as $keyword) {
    $content = preg_replace("/\b$keyword\b/i", "<a href='#'>$keyword</a>", $content);
}

echo $content;
?>

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PHP navigation system automatic linking recurring keywords website content

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