[myfirstcontroller]Model

app-models-myfirstModel.php

<?php
namespace App\models;

use Illuminate\Database\Eloquent\Model;
use Illuminate\Support\Facades\DB;

class mysqlModel extends Model
{
    //getMariaDBUserlist
    public function getUsers()
    {
        $data = DB::table('user')->pluck('user');
        return $data->all();
    }

    //getMariaDBHostlist
    public function getHost()
    {
        $data = DB::table('user')->pluck('host');
        return $data->all();
    }
}