In PHP authorization systems, how do I stream data?

This example demonstrates how to stream data in a PHP authorization system using JavaScript.


        <?php
        session_start();
        
        // Your PHP authorization logic here
        if(isset($_SESSION['user_id'])) {
            // Example of streaming data
            $dataStream = fopen("php://output", "w");
            header('Content-Type: application/json');
            header('Access-Control-Allow-Origin: *');
            $responseData = ['message' => 'Authorized user data stream', 'user_id' => $_SESSION['user_id']];
            fwrite($dataStream, json_encode($responseData));
            fclose($dataStream);
        } else {
            echo json_encode(['message' => 'Unauthorized access']);
        }
        ?>