Where should Ajax requests be handled in PHP MVC and how should Controllers be structured for this?

Ajax requests should be handled in the Controller layer of the PHP MVC architecture. Controllers should be structured to handle both regular HTTP requests and Ajax requests by checking the request type and returning appropriate responses. This can be done by using conditional statements to differentiate between regular requests and Ajax requests within the Controller methods. 

// Controller method to handle Ajax request
public function ajaxAction()
{
    if ($_SERVER['HTTP_X_REQUESTED_WITH'] == 'XMLHttpRequest') {
        // Process Ajax request
        $data = ['message' => 'Ajax request successful'];
        echo json_encode($data);
    } else {
        // Handle non-Ajax request
        // Redirect or return an error message
    }
}

Keywords

Ajax PHP MVC Controllers Request handling Structure

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