How can PHP and JavaScript work together to display dynamic content on external pages?

To display dynamic content on external pages using PHP and JavaScript, you can use PHP to fetch data from a database or an API and then pass that data to JavaScript for rendering on the webpage. This can be achieved by using AJAX to make asynchronous requests to a PHP script that retrieves the data and returns it in a format that JavaScript can process.

<?php
// PHP code to fetch data from a database or API
$data = fetchDataFromDatabaseOrAPI();

// Encode the data as JSON
$jsonData = json_encode($data);
?>

<script>
// JavaScript code to render dynamic content on the webpage
var jsonData = <?php echo $jsonData; ?>;

// Use the jsonData object to update the content on the webpage
</script>