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();