在开发过程中,有时候会碰到一个项目需要连接多个数据库的情况,这种情况在laravel中很好解决。
1、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
2、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' => '', ], // 数据库1 '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, ], // 数据库2 '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)
<?php namespace App\Model; use Illuminate\Database\Eloquent\Model; class Test extends Model { // 数据库'database'中的test表 public $table = 'test'; public $timestamps = false; // 选择连接哪个数据库,若不指定则默认连接mysql protected $connection = 'mysql_test'; }
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();