mcp/app/Commands/MariadbRemoveCommand.php

<?php

namespace App\Commands;

use Illuminate\Console\Scheduling\Schedule;
use LaravelZero\Framework\Commands\Command;
use Illuminate\Support\Facades\File;

use App\Facades\Install;

use Hackzilla\PasswordGenerator\Generator\ComputerPasswordGenerator;
use Hackzilla\PasswordGenerator\RandomGenerator\Php7RandomGenerator;

/**
 *
 *
 *
 */
class MariadbRemoveCommand extends Command
{
    /**
     * The signature of the command.
     *
     * @var string
     */
    protected $signature = 'mariadb:remove {database}';

    /**
     * The description of the command.
     *
     * @var string
     */
    protected $description = 'Remove Mariadb Database and User';

    /**
     * Execute the console command.
     *
     * @return mixed
     */
    public function handle()
    {
        $this->info('Mariadb Remove Database...');

        // getting root password
        $password = $this->secret('Enter root password');

        // connect database
        try {
            $mysqli = new \mysqli('127.0.0.1', 'root', $password);
        } catch(\ErrorException $exception) {
            $this->error('Failed! '.$exception->getMessage());
            exit();
        }

        $database = $this->argument('database');

        // check for user of database
        $result = $mysqli->query("SELECT User FROM mysql.db WHERE Db = '$database'");
        while ($row = $result->fetch_assoc()) {

            // get user from row
            $user = $row['User'];

            // remove if exists
            $mysqli->query("DROP USER IF EXISTS $user@localhost");
            $mysqli->query("DROP USER IS EXISTS $user@'%'");
        }

        // drop database
        $mysqli->query("DROP DATABASE IF EXISTS $database");
        $mysqli->close();

        $this->info('Success! \o/ ');
    }
}