Laravel 使用多个数据库连接

1、配置.env 文件

NECTION=mysql DB_HOST=127.0.0.1 DB_PORT=3306 DB_DATABASE=database_name DB_USERNAME=root DB_PASSWORD= DB_HOST_EXREND=127.0.0.1 DB_PORT_EXREND=3306 DB_DATABASE_EXREND=database_center DB_USERNAME_EXREND=root DB_PASSWORD_EXREND=

2、配置 config/database.php

'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' => 'utf8', 'collation' => 'utf8_unicode_ci', 'prefix' => '', 'strict' => false, 'engine' => null, ], 'mysql_extend' => [ 'driver' => 'mysql', 'host' => env('DB_HOST_EXREND', 'localhost'), 'port' => env('DB_PORT_EXREND', '3306'), 'database' => env('DB_DATABASE_EXRENDR', 'forge'), 'username' => env('DB_USERNAME_EXREND', 'forge'), 'password' => env('DB_PASSWORD_EXREND', ''), 'charset' => 'utf8', 'collation' => 'utf8_unicode_ci', 'prefix' => '', 'strict' => false, 'engine' => null, ],

3, 通过DB进行操作：

DB::connection("mysql_extend")->table("user")->find($id);

4, 通过model进行操作，

public $connection = 'mysql_extend'; public $table = "user"; User::find($id);