如何在PHP Laravel Lumen中建立与数据库的连接？

我正试图通过

localhost

运行基于流明的查询。我不知道如何正确地调用正确的数据库名称

编辑：我出现以下错误的原因是因为我的项目中的

.env

文件中的db名称。我的

文件中的行
db\u DATABASE=mydbschemaname
。env

文件需要有我的数据库名称，但我如何找到它？我到处都找不到

我的代码如下，

routes.php

位于app->Http中：

$app->get('/records', 'UserController@index');

namespace App;

use Illuminate\Auth\Authenticatable;
use Laravel\Lumen\Auth\Authorizable;
use Illuminate\Database\Eloquent\Model;
use Illuminate\Contracts\Auth\Authenticatable as AuthenticatableContract;
use Illuminate\Contracts\Auth\Access\Authorizable as AuthorizableContract;

class User extends Model implements
    AuthenticatableContract,
    AuthorizableContract
{
    use Authenticatable, Authorizable;

    protected $fillable = [
        'name', 'email',
    ];

    protected $hidden = [
        'password',
    ];
}

UserController.php

in-app->Http->Controllers:

namespace App\Http\Controllers;

use App\User;
use App\Http\Controllers\Controller;
use Illuminate\Http\Request;

class UserController extends Controller
{

    public function index() {
        $users = User::all();
        return response()->json($users);
    }
}

User.php

in-app->Http:

$app->get('/records', 'UserController@index');

namespace App;

use Illuminate\Auth\Authenticatable;
use Laravel\Lumen\Auth\Authorizable;
use Illuminate\Database\Eloquent\Model;
use Illuminate\Contracts\Auth\Authenticatable as AuthenticatableContract;
use Illuminate\Contracts\Auth\Access\Authorizable as AuthorizableContract;

class User extends Model implements
    AuthenticatableContract,
    AuthorizableContract
{
    use Authenticatable, Authorizable;

    protected $fillable = [
        'name', 'email',
    ];

    protected $hidden = [
        'password',
    ];
}

[date]\u在app->database->migrations中创建用户\u table.php

use Illuminate\Database\Schema\Blueprint;
use Illuminate\Database\Migrations\Migration;

class CreateUsersTable extends Migration
{
    public function up()
    {
        Schema::create('users', function (Blueprint $table) {
            $table->increments('id');
            $table->string('name', 200);
            $table->string('email', 200)->unique();
            $table->string('password', 200);
            $table->timestamps();
        });

        DB::table('users')->insert(
            ['id' => 1, 'name' => 'example', 'email' => 'example@example.com', 'password' => 'thisisthepassword', 'updated_at' => '2015-10-15 01:23:45', 'created_at' => '2015-10-15 01:23:45']
        );
    }

    public function down()
    {
        Schema::drop('users');
    }
}

当然，我在app->vendor->laravel->lumen framework->config中有

database.php

：

<?php

return [

    /*
    |--------------------------------------------------------------------------
    | PDO Fetch Style
    |--------------------------------------------------------------------------
    |
    | By default, database results will be returned as instances of the PHP
    | stdClass object; however, you may desire to retrieve records in an
    | array format for simplicity. Here you can tweak the fetch style.
    |
    */

    'fetch' => PDO::FETCH_CLASS,

    /*
    |--------------------------------------------------------------------------
    | Default Database Connection Name
    |--------------------------------------------------------------------------
    |
    | Here you may specify which of the database connections below you wish
    | to use as your default connection for all database work. Of course
    | you may use many connections at once using the Database library.
    |
    */

    'default' => env('DB_CONNECTION', 'mysql'),

    /*
    |--------------------------------------------------------------------------
    | Database Connections
    |--------------------------------------------------------------------------
    |
    | Here are each of the database connections setup for your application.
    | Of course, examples of configuring each database platform that is
    | supported by Laravel is shown below to make development simple.
    |
    |
    | All database work in Laravel is done through the PHP PDO facilities
    | so make sure you have the driver for your particular database of
    | choice installed on your machine before you begin development.
    |
    */

    'connections' => [

        'testing' => [
            'driver' => 'sqlite',
            'database' => ':memory:',
        ],

        'sqlite' => [
            'driver'   => 'sqlite',
            'database' => env('DB_DATABASE', base_path('database/database.sqlite')),
            'prefix'   => env('DB_PREFIX', ''),
        ],

        'mysql' => [
            'driver'    => 'mysql',
            'host'      => env('DB_HOST', 'localhost'),
            'port'      => env('DB_PORT', 3306),
            'database'  => env('DB_DATABASE', 'forge'),
            'username'  => env('DB_USERNAME', 'forge'),
            'password'  => env('DB_PASSWORD', ''),
            'charset'   => env('DB_CHARSET', 'utf8'),
            'collation' => env('DB_COLLATION', 'utf8_unicode_ci'),
            'prefix'    => env('DB_PREFIX', ''),
            'timezone'  => env('DB_TIMEZONE', '+00:00'),
            'strict'    => env('DB_STRICT_MODE', false),
        ],

        'pgsql' => [
            'driver'   => 'pgsql',
            'host'     => env('DB_HOST', 'localhost'),
            'port'     => env('DB_PORT', 5432),
            'database' => env('DB_DATABASE', 'forge'),
            'username' => env('DB_USERNAME', 'forge'),
            'password' => env('DB_PASSWORD', ''),
            'charset'  => env('DB_CHARSET', 'utf8'),
            'prefix'   => env('DB_PREFIX', ''),
            'schema'   => env('DB_SCHEMA', 'public'),
        ],

        'sqlsrv' => [
            'driver'   => 'sqlsrv',
            'host'     => env('DB_HOST', 'localhost'),
            'database' => env('DB_DATABASE', 'forge'),
            'username' => env('DB_USERNAME', 'forge'),
            'password' => env('DB_PASSWORD', ''),
            'charset'  => env('DB_CHARSET', 'utf8'),
            'prefix'   => env('DB_PREFIX', ''),
        ],

    ],

    /*
    |--------------------------------------------------------------------------
    | Migration Repository Table
    |--------------------------------------------------------------------------
    |
    | This table keeps track of all the migrations that have already run for
    | your application. Using this information, we can determine which of
    | the migrations on disk haven't actually been run in the database.
    |
    */

    'migrations' => 'migrations',

    /*
    |--------------------------------------------------------------------------
    | Redis Databases
    |--------------------------------------------------------------------------
    |
    | Redis is an open source, fast, and advanced key-value store that also
    | provides a richer set of commands than a typical key-value systems
    | such as APC or Memcached. Laravel makes it easy to dig right in.
    |
    */

    'redis' => [

        'cluster' => env('REDIS_CLUSTER', false),

        'default' => [
            'host'     => env('REDIS_HOST', '127.0.0.1'),
            'port'     => env('REDIS_PORT', 6379),
            'database' => env('REDIS_DATABASE', 0),
            'password' => env('REDIS_PASSWORD', null),
        ],

    ],

];

我假设这是最后一个文件（

.env

），我必须在其中更改

DB\u数据库的名称，但我不能完全确定。任何帮助都将不胜感激

仅供参考：这里的最终结果是能够连接到数据库，并为我正在用户表中添加的用户显示该记录。
您确定有架构名为“database”的数据库吗

在设置数据库时，您需要按如下所示更改DB_uu属性

例如

是的，您需要在
.env
文件中设置与数据库的连接信息。@patricus我理解。我不知道数据库的名称，因此无法连接。有没有办法找到答案？你负责创建数据库。创建数据库后，使用连接信息（例如，您创建的数据库的名称）更新
.env
文件，然后运行迁移（
php artisan migrate
）在数据库内创建表。@patricus创建数据库，我是否需要使用mySQL数据库软件，如mySQL管理服务器？或者我可以通过gitbash命令行或composer来实现这一点。这就是我被困的地方。我不知道如何制作数据库。如果是这样的话，我会做更多的搜索。关于如何做到这一点，已经有大量的信息。不幸的是，这根本没有帮助，因为我不知道在哪里/如何找到数据库的名称。这就是最终阻碍我前进的原因。我只举了一个例子。您需要配置自己的数据库。阅读有关数据库、MySQL（或其他）的内容，创建自己的数据库，将其命名并将其放入
.env
配置文件中。我的问题是，我可以通过GIT bash命令行创建数据库吗？或者我需要使用mySQL Management studio这样的软件来实现这一点吗？您可以触摸database.sqlite文件并通过git推送它。请记住更改
DB\u CONNECTION=sqlite
。