RCCWP_CustomWritePanel::GetAssignedCategories PHP Method

    public static function GetAssignedCategories($customWritePanelId)
    {
        global $wpdb;
        $sql = $wpdb->prepare("SELECT cat_id FROM " . MF_TABLE_PANEL_CATEGORY . " WHERE panel_id = %d", array($customWritePanelId));
        $results = $wpdb->get_results($sql);
        if (!isset($results)) {
            $results = array();
        }
        return $results;
    }

 /**
  * Export a write panel to file
  *
  * @param integer $panelID
  * @param string $exportedFilename the full path of the file to which the panel will be exported
  */
 function Export($panelID)
 {
     include_once 'RCCWP_CustomGroup.php';
     include_once 'RCCWP_CustomField.php';
     $exported_data = array();
     $writePanel = RCCWP_CustomWritePanel::Get($panelID);
     $writePanel->standardFieldsIDs = RCCWP_CustomWritePanel::GetStandardFields($panelID);
     $writePanel->assignedCategories = array();
     $writePanel->theme = RCCWP_CustomWritePanel::GetThemePage($writePanel->name);
     $writePanel->parent_page = RCCWP_CustomWritePanel::GetParentPage($writePanel->name);
     $assignedCategories = RCCWP_CustomWritePanel::GetAssignedCategories($panelID);
     foreach ($assignedCategories as $assignedCategory) {
         $writePanel->assignedCategories[] = $assignedCategory->cat_id;
     }
     $moduleGroups = RCCWP_CustomWritePanel::GetCustomGroups($panelID);
     foreach ($moduleGroups as $moduleGroup) {
         $fields = RCCWP_CustomGroup::GetCustomFields($moduleGroup->id);
         foreach ($fields as $field) {
             if ($field->type == "Related Type") {
                 $tmp = RCCWP_CustomWritePanel::Get($field->properties["panel_id"]);
                 $field->properties["panel_name"] = $tmp->name;
                 unset($field->properties["panel_id"]);
             }
         }
         $groupFields[$moduleGroup->name]->fields = $fields;
         $groupFields[$moduleGroup->name]->duplicate = $moduleGroup->duplicate;
         $groupFields[$moduleGroup->name]->at_right = $moduleGroup->at_right;
     }
     $exported_data['panel'] = $writePanel;
     $exported_data['fields'] = $groupFields;
     return serialize($exported_data);
 }