protected static function queryArray($query, $db = "mig", $debug = false)
 {
     if ($debug) {
         echo $query;
     }
     $con = migration_dbconnection::conForString($db);
     if (!($sql_data = mysqli_query($con, $query))) {
         return false;
     }
     $ret = array();
     while ($o = mysqli_fetch_object($sql_data)) {
         $ret[] = $o;
     }
     return $ret;
 }