/**
* Get Instance of PDO Class as Singleton Pattern
*
* @param array $dsn
*
* @return object $oPDO
*/
public static function getPDO($dsn = array())
{
// if not set self pdo object property or pdo set as null
if (!isset(self::$oPDO) || self::$oPDO !== null) {
// set class pdo property with new connection
self::$oPDO = new self($dsn);
}
// return class property object
return self::$oPDO;
}
/**
* Unset The Class Object
*/
public function __destruct()
{
self::$oPDO = null;
}
