classes 
NAME 
classes() - return names of classes used by object
SYNOPSIS 
mixed *classes(object ob, int verbose);
DESCRIPTION 
Return a string array consisting of names of classes used by <ob>.
The <verbose> parameter is optional and by default 0.
If <verbose> is non-zero, then  additional  information  will  be
returned.
EXAMPLE 
string *classes_used = classes( ob ) ;
// ({ "class_name", }) ;
mixed *classes_used = classes( ob, 1 ) ;
// ({
//     ({
//         "class_name",
//         ({
//             "member_name",
//             "type"
//         }),
//         ...
//     }),
//     ...
// })
SEE ALSO 
num_classes(3)