function getInstance()
{
try {
if (!self::$instance) {
self::$instance = new PDO("mysql:host=127.0.0.1;dbname=lmb_2.0", "root", "admin", array(PDO::ATTR_PERSISTENT => true));
}
return self::$instance;
} catch (PDOException $e) {
return $e->getMessage();
}
}
