我使用 webgrind 和 xdebug 来破坏我的网站性能。php::PDO->__construct 函数花费了 85% 的页面加载时间（大约 1 秒）...
这是无法接受的。我可以以某种方式优化此功能吗？（缓存，mysql配置等）
我正在使用 php、mysql 和 codeigniter 与 redbean。redbean 使用该 pdo 构造函数...
这是函数源代码
/**
* Establishes a connection to the database using PHP PDO
* functionality. If a connection has already been established this
* method will simply return directly. This method also turns on
* UTF8 for the database and PDO-ERRMODE-EXCEPTION as well as
* PDO-FETCH-ASSOC.
*
* @return void
*/
public function connect() {
if ($this->isConnected) return;
$user = $this->connectInfo['user'];
$pass = $this->connectInfo['pass'];
//PDO::MYSQL_ATTR_INIT_COMMAND
$this->pdo = new PDO(
$this->dsn,
$user,
$pass,
array(1002 => 'SET NAMES utf8',
PDO::ATTR_ERRMODE => PDO::ERRMODE_EXCEPTION,
PDO::ATTR_DEFAULT_FETCH_MODE => PDO::FETCH_ASSOC,
)
);
$this->pdo->setAttribute(PDO::ATTR_STRINGIFY_FETCHES, true);
$this->isConnected = true;
}