eZContentOperationCollection::attributePublishAction PHP Method

    public static function attributePublishAction($objectID, $versionNum)
    {
        $object = eZContentObject::fetch($objectID);
        $nodes = $object->assignedNodes();
        $version = $object->version($versionNum);
        $contentObjectAttributes = $object->contentObjectAttributes(true, $versionNum, $version->initialLanguageCode(), false);
        foreach ($contentObjectAttributes as $contentObjectAttribute) {
            $contentObjectAttribute->onPublish($object, $nodes);
        }
    }