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
tgreSQL, or Postgres, is a relational database management system that provides an implementation of the SQL querying language. It is a popular choice for many small and large projects and has the advantage of being standards-compliant and having many advanced features like reliable transactions and concurrency without read locks.