I know exactly what a PHP framework and OOP is but I do not see the purpose in the real sense. So let me ask those who use it,

What is the purpose of Frameworks and OOP in PHP? Frameworks like Laravel, CodeIgniter and so on exist and many web developers make use of these frameworks. But what is the special thing these Frameworks would accomplish that native code cannot accomplish?

My question also applies to OOP in PHP. What is the purpose of that too? Someone said portability but i think it makes code longer and unnecessarily complex.

What do you think?