Thinkphp6多数据库实例跨库操作

# 默认数据库配置
DB_CONNECTION=mysql
DB_HOST=127.0.0.1
DB_PORT=3306
DB_DATABASE=default_db
DB_USERNAME=root
DB_PASSWORD=
# 第二个数据库配置
DB2_CONNECTION=mysql
DB2_HOST=127.0.0.1
DB2_PORT=3306
DB2_DATABASE=second_db
DB2_USERNAME=root
DB2_PASSWORD=

return [
    // 默认数据库连接配置
    'default' => env('DB_CONNECTION', 'mysql'),
    'connections' => [
        'mysql' => [
            'driver' => 'mysql',
            'host' => env('DB_HOST', '127.0.0.1'),
            'port' => env('DB_PORT', '3306'),
            'database' => env('DB_DATABASE', 'forge'),
            'username' => env('DB_USERNAME', 'forge'),
            'password' => env('DB_PASSWORD', ''),
            'unix_socket' => env('DB_SOCKET', ''),
            'charset' => 'utf8mb4',
            'collation' => 'utf8mb4_unicode_ci',
            'prefix' => '',
            'strict' => true,
            'engine' => null,
        ],
        // 第二个数据库连接
        'mysql2' => [
            'driver' => 'mysql',
            'host' => env('DB2_HOST', '127.0.0.1'),
            'port' => env('DB2_PORT', '3306'),
            'database' => env('DB2_DATABASE', 'forge'),
            'username' => env('DB2_USERNAME', 'forge'),
            'password' => env('DB2_PASSWORD', ''),
            'unix_socket' => env('DB2_SOCKET', ''),
            'charset' => 'utf8mb4',
            'collation' => 'utf8mb4_unicode_ci',
            'prefix' => '',
            'strict' => true,
            'engine' => null,
        ],
    ],
    // 其他配置项...
];

// 使用默认的数据库连接
$defaultData = DB::table('users')->get();
// 使用第二个数据库连接
$secondDbData = DB::connection('mysql2')->table('orders')->get();