dear all..
any one please tell me which function in php work same as isinstance function of php and how to use it.

isinstance(object, classinfo):
Return true if the object argument is an instance of the classinfo argument, or of a (direct or indirect) subclass thereof. Also return true if classinfo is a type object and object is an object of that type.
thanks

You can use the instanceof operator and there is also the is_a function.