Introspection in PHP

In this tutorial you are going to learn about the concept called as Introspection. I will discuss four functions related to introspection :
1. class_exists()
2. get_class()
3. get_parent_class()
4. is_subclass_of()
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#phpforbeginners

[@ashranpathan8630]

mam can you plz upload solve php qb

[@MKTutorials4u]

Which QB?