is_subclass_of
(PHP 4 )
is_subclass_of -- Returns TRUE if the object has this class
as one of its parents
Description
bool is_subclass_of ( object object, string class_name)
This function returns TRUE if the object object, belongs
to a class which is a subclass of class_name, FALSE otherwise.
See also get_class(), get_parent_class() and is_a().
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