rcp_user_has_free_membership()
Returns true if the given user has at least one active membership for a free membership level.
Parameters:
- $user_id (int) - ID of the user account to check. Default is the ID of the currently logged in user.
Return values:
true
if the user has an active, free membership.false
if the user has no membership at all, or only has an active paid membership, or has an expired/cancelled/pending membership.