PHP is a popular general-purpose scripting language that is especially suited to web development. 

Fast, flexible and pragmatic, PHP powers everything from your blog to the most popular websites in the world.

SQL (pronounced "ess-que-el") stands for Structured Query Language. SQL is used to communicate with a database. According to ANSI (American National Standards Institute), it is the standard language for relational database management systems.

Cheat Sheet - How to Learn SQL in 10 Minutes

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