CForumSubscribe::CanUserDeleteSubscribe

bool
CanUserDeleteSubscribe(
 int ID,
 array arUserGroups,
 int iUserID
);

Thoroughly checks whether a user of a specified group can unsubscribe from the specified forum.

Parameter	Description
ID	The ID of the subscription from which a user wants to unsubscribe.
arUserGroups	Array of groups that the user is member of. For the current user, you can obtain this array by calling `$USER->GetUserGroupArray()`.
iUserID	The user ID. For the current user, you can obtain it by calling `$USER->GetID()`.

Returns true is the user can unsubscribe, or false otherwise.