Are there any best practices or specific PHP commands to achieve the desired functionality of reloading only a portion of the webpage?

To reload only a portion of a webpage using PHP, you can utilize AJAX (Asynchronous JavaScript and XML) to make a request to the server and update the specific portion of the page without refreshing the entire page. This can be achieved by creating a PHP script that returns the updated content and using JavaScript to handle the AJAX request and update the DOM element. 

```php
// PHP script to handle the AJAX request
<?php
// Check if the request is an AJAX request
if(isset($_SERVER['HTTP_X_REQUESTED_WITH']) && strtolower($_SERVER['HTTP_X_REQUESTED_WITH']) == 'xmlhttprequest') {
    // Code to fetch and return the updated content
    echo "This is the updated content.";
}
?>
```

This PHP script can be called using an AJAX request in JavaScript to dynamically update a specific portion of the webpage without reloading the entire page.

Keywords

PHP AJAX jQuery DOM manipulation XMLHttpRequest

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