Have you ever wanted to get list of Countries in the World? Or perhaps calling/dialing codes? How about list of timezones and languages for your project? Here is a perfect solution for you
The PHP Data Objects (PDO) defines a lightweight interface for accessing databases in PHP. It provides a data-access abstraction layer for working with databases in PHP. It defines consistent API for working with various database systems
MySQL is an open-source database management system, commonly installed as part of the popular LAMP (Linux, Apache, MySQL, PHP/Python/Perl) stack. It uses a relational database and SQL (Structured Query Language) to manage its data.