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# 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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