我需要为客户端连接到两个单独的数据库。一个数据库保存所有标准商店数据、客户、订单等，另一个数据库保存大约 41,000 个促销代码。我已经查看了 PDO 以连接到多个数据库，因为这是新标准，但是当我们有一个包含数据库连接信息的 configure.php 文件时，我不知道如何实现这一点。
configure.php 下面列出：
define('HTTP_SERVER', 'http://localhost');
define('HTTPS_SERVER', 'https://localhost');
// Use secure webserver for checkout procedure?
define('ENABLE_SSL', 'false');
// NOTE: be sure to leave the trailing '/' at the end of these lines if you make changes!
// * DIR_WS_* = Webserver directories (virtual/URL)
// these paths are relative to top of your webspace ... (ie: under the public_html or httpdocs folder)
define('DIR_WS_CATALOG', '/');
define('DIR_WS_HTTPS_CATALOG', '/');
define('DIR_WS_IMAGES', 'images/');
define('DIR_WS_INCLUDES', 'includes/');
define('DIR_WS_FUNCTIONS', DIR_WS_INCLUDES . 'functions/');
define('DIR_WS_CLASSES', DIR_WS_INCLUDES . 'classes/');
define('DIR_WS_MODULES', DIR_WS_INCLUDES . 'modules/');
define('DIR_WS_LANGUAGES', DIR_WS_INCLUDES . 'languages/');
define('DIR_WS_DOWNLOAD_PUBLIC', DIR_WS_CATALOG . 'pub/');
define('DIR_WS_TEMPLATES', DIR_WS_INCLUDES . 'templates/');
// * DIR_FS_* = Filesystem directories (local/physical)
//the following path is a COMPLETE path to your Zen Cart files. eg: /var/www/vhost/accountname/public_html/store/
define('DIR_FS_CATALOG', '/');
define('DIR_FS_DOWNLOAD', DIR_FS_CATALOG . 'download/');
define('DIR_FS_DOWNLOAD_PUBLIC', DIR_FS_CATALOG . 'pub/');
define('DIR_WS_UPLOADS', DIR_WS_IMAGES . 'uploads/');
define('DIR_FS_UPLOADS', DIR_FS_CATALOG . DIR_WS_UPLOADS);
define('DIR_FS_EMAIL_TEMPLATES', DIR_FS_CATALOG . 'email/');
// define our database connection
define('DB_TYPE', 'mysql');
define('DB_PREFIX', ''); // prefix for database table names -- preferred to be left empty
define('DB_SERVER', 'localhost');
define('DB_SERVER_USERNAME', '');
define('DB_SERVER_PASSWORD', '');
define('DB_DATABASE', '');
// The next 2 "defines" are for SQL cache support.
// For SQL_CACHE_METHOD, you can select from: none, database, or file
// If you choose "file", then you need to set the DIR_FS_SQL_CACHE to a directory where your apache
// or webserver user has write privileges (chmod 666 or 777). We recommend using the "cache" folder inside the Zen Cart folder
// ie: /path/to/your/webspace/public_html/zen/cache -- leave no trailing slash
define('SQL_CACHE_METHOD', 'none');
define('DIR_FS_SQL_CACHE', '/enter/your/path/to/public_html_or_htdocs/and/zencart/here/zen/cache');
挖掘 php 文件我发现了这个，这似乎是创建连接的地方：
// Load queryFactory db classes
require(DIR_FS_CATALOG . DIR_WS_CLASSES . 'db/' .DB_TYPE . '/query_factory.php');
$db = new queryFactory();
$db->connect(DB_SERVER, DB_SERVER_USERNAME, DB_SERVER_PASSWORD, DB_DATABASE);
我看着使用：
try {
$db1 = new PDO('mysql:dbname=databas1;host=127.0.0.1', 'username', 'password');
$db2 = new PDO('mysql:dbname=databas2;host=127.0.0.1', 'username', 'password');
} catch (PDOException $ex) {
echo 'Connection failed: ' . $ex->getMessage();
}
代替现有的：
$db->connect(DB_SERVER, DB_SERVER_USERNAME, DB_SERVER_PASSWORD, DB_DATABASE);
但我担心这意味着需要更改所有现有查询以涵盖 $db1、$db2 问题。两个数据库都位于同一台服务器上，并使用相同的用户/密码组合。
非常感谢任何帮助。