Display PHP Information Using phpinfo in Symfony 7

Symfony framework provides powerful tools for developing robust web applications. During development, it can be useful to check the PHP configuration settings, extensions, and other runtime information. PHP offers phpinfo function for getting this information. This tutorial demonstrates how to display PHP information using phpinfo in Symfony 7.

To create a dedicated route for displaying PHP information, we can use the Symfony routing system and the phpinfo function. Here is an example of the controller code snippet that accomplishes this task:

<?php

namespace App\Controller;

use Symfony\Component\HttpFoundation\Response;
use Symfony\Component\Routing\Attribute\Route;

class PhpInfoController
{
    #[Route('/phpinfo')]
    public function index(): Response
    {
        ob_start();
        phpinfo();
        $info = ob_get_clean();

        return new Response($info);
    }
}

The ob_start is used to start output buffering, which enables capturing the output generated by the phpinfo function. The ob_get_clean is utilized to capture the buffered output, storing it in the variable, and simultaneously cleaning the output buffer. Finally, the variable that stores PHP information is set as the response content.

It is important to note that the controller should be protected in the production environment, or alternatively, the route should only be accessible if the debug mode is enabled. You can read a post about that.