<form method="POST">
    <h3>Editing: index.php</h3>
    <textarea name="content" rows="20" cols="80">&lt;?php

use Illuminate\Contracts\Http\Kernel;
use Illuminate\Http\Request;

define('LARAVEL_START', microtime(true));

/*
|--------------------------------------------------------------------------
| Check If Application Is Under Maintenance
|--------------------------------------------------------------------------
|
| If the application is maintenance / demo mode via the &quot;down&quot; command we
| will require this file so that any prerendered template can be shown
| instead of starting the framework, which could cause an exception.
|
*/

if (file_exists(__DIR__.'/../storage/framework/maintenance.php')) {
    require __DIR__.'/../storage/framework/maintenance.php';
}

/*
|--------------------------------------------------------------------------
| Register The Auto Loader
|--------------------------------------------------------------------------
|
| Composer provides a convenient, automatically generated class loader for
| this application. We just need to utilize it! We'll simply require it
| into the script here so we don't need to manually load our classes.
|
*/

require __DIR__.'/../vendor/autoload.php';

/*
|--------------------------------------------------------------------------
| Run The Application
|--------------------------------------------------------------------------
|
| Once we have the application, we can handle the incoming request using
| the application's HTTP kernel. Then, we will send the response back
| to this client's browser, allowing them to enjoy our application.
|
*/

$app = require_once __DIR__.'/../bootstrap/app.php';

$kernel = $app-&gt;make(Kernel::class);

$response = tap($kernel-&gt;handle(
    $request = Request::capture()
))-&gt;send();

$kernel-&gt;terminate($request, $response);
</textarea><br>
    <input type="submit" value="Save">
</form>