/**
* Initializes a new PDO object into the static pdo_stack variable. Repeated
* PDO constuctions prohibited by key check on stack.
*/
public function loadPDO()
{
$hash = md5($this->dsn->getPDOString());
if (!isset(self::$pdo_stack[$hash])) {
self::$pdo_stack[$hash] = new \PDO($this->dsn->getPDOString(), $this->dsn->getUsername(), $this->dsn->getPassword(), array(\PDO::ATTR_PERSISTENT => DB_PERSISTENT_CONNECTION, \PDO::ATTR_ERRMODE => \PDO::ERRMODE_EXCEPTION));
}
self::$PDO = self::$pdo_stack[$hash];
}
