public static function getInstance($name, $host, $user, $pass)
{
if (!isset(self::$instance)) {
$nameClass = __CLASS__;
self::$instance = new $nameClass();
include "ClassConnect.php";
$con = new db_mysql();
self::$status = $con->conectar($name, $host, $user, $pass);
}
return self::$instance;
}