/**
* Subscribe a user to a thread.
*
* Remark: Currently, there is no active support for subscribing to forums
* using subscription type PHORUM_SUBSCRIPTION_DIGEST in the Phorum core.
*
* @param integer $user_id
* The id of the user to create the subscription for.
*
* @param integer $thread
* The id of the thread to describe to.
*
* @param integer $forum_id
* The id of the forum in which the thread to subscribe to resides.
*
* @param integer $type
* The type of subscription. Available types are:
* - {@link PHORUM_SUBSCRIPTION_NONE}
* - {@link PHORUM_SUBSCRIPTION_MESSAGE}
* - {@link PHORUM_SUBSCRIPTION_BOOKMARK}
* - {@link PHORUM_SUBSCRIPTION_DIGEST}
*/
function phorum_api_user_subscribe($user_id, $thread, $forum_id, $type)
{
// Check if the user is allowed to read the forum.
if (!phorum_api_user_check_access(PHORUM_USER_ALLOW_READ, $forum_id)) {
return;
}
// Setup the subscription.
phorum_db_user_subscribe($user_id, $thread, $forum_id, $type);
}
function phorum_user_subscribe( $user_id, $forum_id, $thread, $type )
{
$list=phorum_user_access_list( PHORUM_USER_ALLOW_READ );
if(!in_array($forum_id, $list)) return;
return phorum_db_user_subscribe( $user_id, $forum_id, $thread, $type );
}