Question:Define interface with an example. 

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Question:What is abstract class? Write with an example. 

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Question:How do we define class? Show with an example. 

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Question:How do we create an object of any class? 

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Question:What is object cloning? Show it with an example. 

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Question:How is it possible to parse a configuration file? 

The function parse_ini_file() enables us to load in the ini file specified in filename, and returns the settings in it in an associative array.

Question:Define function overriding and property overloading? 

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Question:How do we define constant variables in OOP and how do we create constant variable with define() function? Show with an example. 

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Question:
What is extends, implements, interface, abstract, class, new, static, and instanceof keywords used for?
 

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Question:
What are __toString(), __autoload(), __construct(), __destruct(),__set(),__get(),__clone() functions? Briefly explain.
 

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