use laravel Authentication in pure php scripts - php

Question

I am working on a laravel App. a part of that is written pure php that is a html form and form submission script that stores data to Database.
Suppose form.php page is like :
<?php
require('config.php');
?>
<form action="process.php" method="post">
<input type="text" name="username">
<input type="submit" value="Send">
</form>
And process.php page is :
<?php
require ('config.php');
?>
if (isset($_POST['submit_edu'])) {
$username = trim($_POST['username']);
// other codes to store data to DB
}
Now I want just Authenticated Users in main laravel app can access to those pages and send their info.
To access Auth laravel Object, I added below codes to beginning of config.php file that holds connection settings and required by those two page:
require __DIR__ . '/../../bootstrap/autoload.php';
$app = require_once __DIR__ . '/../../bootstrap/app.php';
$app->make('Illuminate\Contracts\Http\Kernel')->handle(Illuminate\Http\Request::capture());
$kernel = $app->make(Illuminate\Contracts\Http\Kernel::class);
$response = $kernel->handle(
$request = Illuminate\Http\Request::capture()
);
if (!Auth::check()) {
exit('Only authorized Users can access to this page');
}
As you can see if an unAuthorized user want to pages Encounters an error.
Now when an Authenticated user want to open form.php page (in face via GET method) Auth::check() works correctly but when clicks on submit form button and data sent to process.php (via POST method) , it always returns false.
While if I open same process.php via GET method Auth::check() works correctly again.
Means in this case Auth::check() can not work properly.
What is problem in your idea. can anyone help me to solve this problem?
Update :
Even I used EventServiceProvider and authentication events to create a session. first I added this to provider :
'Illuminate\Auth\Events\Login' => [
'App\Listeners\SessionLoginEnable',
],
And in SessionLoginEnable:
public function handle (Login $event)
{
session(['user_is_logged_in' => true]);
}
then I added:
'Illuminate\Auth\Events\Logout' => [
'App\Listeners\SessionLoginDisable',
],
And in that :
public function handle (Logout $event)
{
session(['user_is_logged_in' => false]);
}
And in the other hand to check and user created session first I tried in config.php :
require __DIR__ . '/../../bootstrap/autoload.php';
$app = require_once __DIR__ . '/../../bootstrap/app.php';
$app->make('Illuminate\Contracts\Http\Kernel')->handle(Illuminate\Http\Request::capture());
$kernel = $app->make(Illuminate\Contracts\Http\Kernel::class);
$response = $kernel->handle(
$request = Illuminate\Http\Request::capture()
);
$is_logged = session('user_is_logged_in');*
if ( !is_logged ) {
exit('Only authorized Users can access to this page');
}
This solution did not work.
Then I tried this :
session_start();
if ( !isset($_SESSION['user_is_logged_in']) or $_SESSION['user_is_logged_in'] != true) {
exit('Only authorized Users can access to this page');
}
But in this case again, the answer not receive and It seems $_SESSION['user_is_logged_in'] could not be recognized.
Another solution remains?