/**
* Mysql构造函数
*
* @param string $host
* @param string $user
* @param string $password
* @param string $db_name
* @param string $charset
*/
public function __construct($host, $port, $user, $password, $db_name, $charset)
{
$this->host = $host;
$this->port = $port;
$this->user = $user;
$this->db_name = $db_name;
$this->charset = $charset;
$this->password = $password;
$this->dbdebug = factory::createDBDebugObject();
}