Lumen 6.x 7.x Generate Key

lumen 6.x 7.x generate key.txt

<?php

namespace App\Console\Commands;

use Illuminate\Support\Str;
use Illuminate\Console\Command;

/**
 * Class KeyGenerateCommand
 * @package App\Console\Commands
 */
class KeyGenerateCommand extends Command
{
    /**
     * The name and signature of the console command.
     *
     * @var string
     */
    protected $signature = 'key:generate {--show=false}';

    /**
     * The console command description.
     *
     * @var string
     */
    protected $description = "Set the application key";

    /**
     * Execute the console command.
     *
     * @return void
     */
    public function handle()
    {
        $key = $this->getRandomKey();
        $appKey = 'base64:' . $key;

        if ($this->option('show') === null) {
            $this->line('<comment>' . $key . '</comment>');
        }

        $path = base_path('.env');

        if (file_exists($path)) {
            file_put_contents(
                $path,
                preg_replace('/(APP_KEY=)(\s|.*)\n/', ("APP_KEY={$appKey}\n"), file_get_contents($path))
            );
        }

        $this->info("Application key [$key] set successfully.");
    }

    /**
     * Generate a random key for the application.
     *
     * @return string
     */
    protected function getRandomKey()
    {
        return Str::random(64);
    }
}