code example for detecting AJAX requests in PHP

In most cases, JavaScript-based JS frames, such as jquery, Mootools, prototype, and so on, send an additional Http_x_requested_with header when an AJAX request is issued, as an AJAX request, So you can detect these AJAX requests on the server side, and the detection method in PHP is shown in the following code:

<? PHP if (!emptyempty ($_serverstrtolower($_server[' http_x_requested_with ']) = = ' XMLHttpRequest     {// This is your AJAX request processing logic }else{    / / some logic ...  }?>

It is used when developing AJAX interactive applications.

code example for detecting AJAX requests in PHP