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is_subclass_of

(PHP 4 >= 4.0.0)

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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