What are some potential solutions or libraries that can be used to automatically highlight code on a website?

One potential solution to automatically highlight code on a website is to use a syntax highlighting library like Prism.js. This library allows you to easily add syntax highlighting to code snippets on your website by simply including the necessary CSS and JavaScript files.

<!DOCTYPE html>
<html>
<head>
  <link href="https://cdn.jsdelivr.net/npm/prismjs@1.24.1/themes/prism.min.css" rel="stylesheet">
</head>
<body>

<pre><code class="language-php">
<?php
// Your PHP code here
echo "Hello, World!";
?>
</code></pre>

<script src="https://cdn.jsdelivr.net/npm/prismjs@1.24.1/prism.min.js"></script>
</body>
</html>