Primarily used for: Web Development, App Development.
PHP- PHP stands for ‘Hypertext Preprocessor’. It is a general-purpose scripting language that is especially suited to web development. This is a very old language and very easy to learn language. It is server side back end scripting language, which runs on Apache server and it returns results through HTML tags as result which we see on our browser. Such was the popularity of PHP back then that Facebook is wholly coded in PHP.
Primarily used for: Server Side Web Development.
Ruby- Ruby is an interpreted, high-level, general-purpose programming language. It was designed and developed in the mid-1990s. Ruby is most used for building web applications. However, it is a general-purpose language similar to Python, so it has many other applications like data analysis, prototyping, and proof of concepts. Probably the most obvious implementation of Ruby is Rails web, the development framework built with Ruby.
Primarily used for: Web Development, General Purpose.
Python- Python is an interpreted, high-level and general-purpose programming language. It’s design philosophy emphasizes code readability with its notable use of significant whitespaces. It is one of the beautiful language out there in the market which an beginner can catch up easily. Python has a vast community support and due to which working with APIs to make chat bots, scrapers and anything you dream of is easy as never before.
Primarily used for: General Purpose, All-Rounder.
MySQL- MySQL is an open-source relational database management system (RDBMS) that uses Structured Query Language (SQL). SQL is the most popular language for adding, accessing and managing content in a database. It is most noted for its quick processing, proven reliability, ease and flexibility of use. Learning MySQL is also very easy and it is widely used for making databases and many companies around the world relies on the efficiency of this language.
Primarily used for: Database Management.
However, if you ask for most different among these 5, then it is MySQL since it is relational database and others are programming language.
Let me brief you about each one of them –
I hope you have got brief idea about each one of them. Do more research if you want to learn any of these programming language or database management system. But, my personal advice would be to start with Python since it’s in trend and easy to understand.