Manmohanjit Singh

Here’s a piece of code that might come in handy while handling Ajax requests through PHP. With this code, you can easily check if there is an Ajax request.

function isAjax() {
	if(!empty($_SERVER['HTTP_X_REQUESTED_WITH']) && strtolower($_SERVER['HTTP_X_REQUESTED_WITH']) == 'xmlhttprequest') {
		return true;
	}
	else {
		return false;
	}
}

To check for an Ajax request is as simple as this:

if(isAjax()) {
	//there is an ajax request
}
else {
	//:( no ajax request
}

So now you don’t need to send in a post/get parameter just to check for an Ajax request, just use the code above.