(PHP 3 >= 3.0.3, PHP 4, PECL)
hw_InCollections -- Check if object ids in collections
( int connection, array object_id_array, array collection_id_array, int return_collections )
Checks whether a set of objects (documents or collections)
specified by the object_id_array is part of
the collections listed in collection_id_array.
When the fourth parameter return_collections is 0,
the subset of object ids that is part of the collections (i.e.,
the documents or collections that are children of one or more
collections of collection ids or their subcollections, recursively)
is returned as an array. When the fourth parameter is 1, however, the
set of collections that have one or more objects of this subset as
children are returned as an array. This option allows a client to,
e.g., highlight the part of the collection hierarchy that contains
the matches of a previous query, in a graphical overview.