- /**
- * Return unavailable networks
- */
- public static function unavailableNetworks()
- {
- $networks = self::unavailableNetworksAsArray();
-
- if (!sizeof($networks)) {
- return "";
- }
-
- $network_filter = implode("','", $networks);
-
- $network_filter = "AND `network` NOT IN ('$network_filter')";
-
- return $network_filter;
- }
-