Laravel command to encrypt environment variable values for safe storage

EncryptEnvCommand.php

<?php

// app/Console/Commands/EncryptEnvCommand.php

namespace Ictus\Hub\Console\Commands;

use Illuminate\Console\Command;
use Illuminate\Encryption\Encrypter;
use Symfony\Component\Console\Input\InputArgument;

class EncryptEnvCommand extends Command
{

    protected $name        = 'encrypt-env';
    protected $description = 'Encrypt environment variable value so it can be safely stored';

    public function handle()
    {
        $crypt = new Encrypter(config("env.key"));
        foreach ($this->argument('value') as $value) {
            $this->output->writeln("ENC:" . $crypt->encrypt($value));
        }
    }

    protected function getArguments()
    {
        return [
            ['value', InputArgument::REQUIRED | InputArgument::IS_ARRAY, 'Value of the environment variable'],
        ];
    }
}

I had some difficulty with calling this command. It turned out I needed to adjust the signature

protected $signature = 'encrypt-env {value*}';