Question:What are the terms Encapsulation, Inheritance, and Polymorphism? Show all with and code example indicating by comments. 

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Question:What are the three methodology of authentication? 

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Question:What are the PHP authentication variables? 

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Question:
Breifly explain the following functions:
explode()
list()
fwrite()
fputs()
fclose()
md5()
rand()
uniqid()
substr()
filter_var()
 

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Question:How to send http authentication header with php header() function? 

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Question:What are the four lines we need to write to .htaccess file to restrict any folder in the webserver? 

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Question:What is .htpasswd file and how can we create it? 

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Question:Define OOP language. Write benefits of OOP. 

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Question:What is class and object? 

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Question:Define Inheritance, Polymorphism, and Encapsulation in term of OOP. Show an example with appropriate comments involving all issues. 

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