Laravel 同时连接多个数据库

上文说到thinkphp3.2同时连接两个数据库的文章，然后在总结下laravel同时连接
多个数据库的实例，方便新手学习，db连接以及model连接。

配置.env 文件

DB_CONNECTION=mysql
DB_HOST=127.0.0.1
DB_PORT=3306
DB_DATABASE=database_name
DB_USERNAME=root
DB_PASSWORD=root

DB_HOST_TEST=127.0.0.1
DB_PORT_TEST=3306
DB_DATABASE_TEST=database_test
DB_USERNAME_TEST=root
DB_PASSWORD_TEST=root

配置 config/database.php

// 默认连接mysql
'default' => env('DB_CONNECTION', 'mysql'),

'connections' => [

        'sqlite' => [
            'driver'   => 'sqlite',
            'database' => database_path('database.sqlite'),
            'prefix'   => '',
        ],

        'mysql' => [
            'driver'    => 'mysql',
            'host'      => env('DB_HOST', '127.0.0.1'),
            'port'      => env('DB_PORT', '3306'),
            'database'  => env('DB_DATABASE', 'database_name'),
            'username'  => env('DB_USERNAME', 'root'),
            'password'  => env('DB_PASSWORD', 'root'),
            'charset'   => 'utf8',
            'collation' => 'utf8_unicode_ci',
            'prefix'    => '',
            'strict'    => false,
        ],

        'mysql_test' => [
            'driver'    => 'mysql',
            'host'      => env('DB_HOST_TEST', '127.0.0.1'),
            'port'      => env('DB_PORT_TEST', '3306'),
            'database'  => env('DB_DATABASE_TEST', 'database_test'),
            'username'  => env('DB_USERNAME_TEST', 'root'),
            'password'  => env('DB_PASSWORD_TEST', 'root'),
            'charset'   => 'utf8',
            'collation' => 'utf8_unicode_ci',
            'prefix'    => '',
            'strict'    => false,
        ],

    ],

model实例(这个model将使用mysql_test连接)

model实例(这个model将采用默认的’mysql’连接)

调用model实例

// 以下是调用方法
Test::get();
Test::where('id',1)->first();

DB直接连接数据库

// 连接mysql_test库
DB::connection('mysql_test')->table('test')->where('id',1)->first();
// 连接mysql库
DB::connection('mysq')->table('test')->where('id',1)->first();
// 连接mysql库
DB::table('test')->where('id',1)->first();