/**
* 获取db
*@return MySql
*/
public static function getDb($dbname = NULL, $dbClassName = 'MySql')
{
if (null == $dbname) {
$dbId = $dbClassName.':default';
$config = SuiShiPHPConfig::genDbConfig(C('DB_HOST'), C('DB_USER'), C('DB_PASSWORD'), C('DB_NAME'));
} else {
$dbId = $dbClassName.':'.$dbname;
$config = SuiShiPHPConfig::getDbConfig($dbname);
}
if (!$config) {
return null;
}
if (!isset(self::$DBS[$dbId])) {
$db = new $dbClassName($config['DB_HOST'], $config['DB_USER'], $config['DB_PWD'], $config['DB_NAME']);
self::$DBS[$dbId] = $db;
}
return self::$DBS[$dbId];
}