In myexperience as a PHP Developer I used the Codeigniter Framework to create projects such as Portal of the site and Accounting System. But before that I created a website by using OOP for public teachers to view their current balances(a financial company). When they d----------- to create a portal to extend their services they ask me to do it and provide some extra security. Then we create a game plan for new prospects of profit. We d----------- to create an Accounting System. This application compose of many modules. One by one we accomplish it then proceed to the next module.Additionally after I resigned I created a website services for the Koreans. I build it using Strong OOP ----------- Australian company I am providing solutions to every client where the requirements does not meet. I create a REST API to extend the capabilities of the app. I use the Laravel framework to solve this along with JavaScript, Jquery, Ajax and MySQL.Then I have learned about OAuth2 API authentication and I work as a Senior API Developer to our company.