Code for PHP to detect AJAX requests

Most JavaScript frameworks, such as Jquery,mootools, send additional Http_x_requested_with header information when an AJAX request is made, and when they have an AJAX request, they can detect an AJAX request on the server side. Most JavaScript frameworks, such as Jquery,mootools, send additional Http_x_requested_with header information when an AJAX request is made, and when they have an AJAX request, they can detect an AJAX request on the server side. Here is a piece of PHP code that detects AJAX requests.

