ecshop多数据库配置

return [
    // 核心业务数据库配置
    'db_core' => [
        'type' => 'mysqli',
        'host' => 'localhost',
        'user' => 'core_user',
        'password' => 'core_password',
        'database' => 'core_db',
    ],

    // 日志数据库配置
    'db_log' => [
        'type' => 'mysqli',
        'host' => 'localhost',
        'user' => 'log_user',
        'password' => 'log_password',
        'database' => 'log_db',
    ],
];

class DB {
    private static $connections = [];

    public static function connect($config) {
        if (!isset(self::$connections[$config['type']])) {
            $class = ucfirst(strtolower($config['type'])).'DB';
            self::$connections[$config['type']] = new $class($config);
        }
        return self::$connections[$config['type']];
    }
}

class MysqliDB {
    private $conn;

    public function __construct($config) {
        $this->conn = new mysqli($config['host'], $config['user'], $config['password'], $config['database']);
        if ($this->conn->connect_error) {
            die('连接失败: ' . $this->conn->connect_error);
        }
    }

    public function query($sql) {
        return $this->conn->query($sql);
    }

    // 其他数据库操作方法...
}

// 连接核心业务数据库
$coreDb = DB::connect(config('db_core'));

// 连接日志数据库
$logDb = DB::connect(config('db_log'));

// 执行查询
$coreResult = $coreDb->query('SELECT * FROM products');
$logResult = $logDb->query('SELECT * FROM logs');