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

namespace Illuminate\Foundation\Bootstrap;

use Dotenv\Dotenv;
use Dotenv\Exception\InvalidFileException;
use Illuminate\Contracts\Foundation\Application;
use Illuminate\Support\Env;
use Symfony\Component\Console\Input\ArgvInput;
use Symfony\Component\Console\Output\ConsoleOutput;

class LoadEnvironmentVariables
{
    /**
     * Bootstrap the given application.
     *
     * @param  \Illuminate\Contracts\Foundation\Application  $app
     * @return void
     */
    public function bootstrap(Application $app)
    {
        if ($app-&gt;configurationIsCached()) {
            return;
        }

        $this-&gt;checkForSpecificEnvironmentFile($app);

        try {
            $this-&gt;createDotenv($app)-&gt;safeLoad();
        } catch (InvalidFileException $e) {
            $this-&gt;writeErrorAndDie($e);
        }
    }

    /**
     * Detect if a custom environment file matching the APP_ENV exists.
     *
     * @param  \Illuminate\Contracts\Foundation\Application  $app
     * @return void
     */
    protected function checkForSpecificEnvironmentFile($app)
    {
        if ($app-&gt;runningInConsole() &amp;&amp; ($input = new ArgvInput)-&gt;hasParameterOption('--env')) {
            if ($this-&gt;setEnvironmentFilePath(
                $app, $app-&gt;environmentFile().'.'.$input-&gt;getParameterOption('--env')
            )) {
                return;
            }
        }

        $environment = Env::get('APP_ENV');

        if (! $environment) {
            return;
        }

        $this-&gt;setEnvironmentFilePath(
            $app, $app-&gt;environmentFile().'.'.$environment
        );
    }

    /**
     * Load a custom environment file.
     *
     * @param  \Illuminate\Contracts\Foundation\Application  $app
     * @param  string  $file
     * @return bool
     */
    protected function setEnvironmentFilePath($app, $file)
    {
        if (is_file($app-&gt;environmentPath().'/'.$file)) {
            $app-&gt;loadEnvironmentFrom($file);

            return true;
        }

        return false;
    }

    /**
     * Create a Dotenv instance.
     *
     * @param  \Illuminate\Contracts\Foundation\Application  $app
     * @return \Dotenv\Dotenv
     */
    protected function createDotenv($app)
    {
        return Dotenv::create(
            Env::getRepository(),
            $app-&gt;environmentPath(),
            $app-&gt;environmentFile()
        );
    }

    /**
     * Write the error information to the screen and exit.
     *
     * @param  \Dotenv\Exception\InvalidFileException  $e
     * @return void
     */
    protected function writeErrorAndDie(InvalidFileException $e)
    {
        $output = (new ConsoleOutput)-&gt;getErrorOutput();

        $output-&gt;writeln('The environment file is invalid!');
        $output-&gt;writeln($e-&gt;getMessage());

        exit(1);
    }
}
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