PHP is a widely used general-purpose scripting language originally designed for web development to produce dynamic web pages. However, it is now used in a wide range of general programming applications, and can be embedded into HTML source code through server side includes or php include files. It's extremely fast, reliable and robust due to the fact that it's an open source language, but still offers many advantages not provided by other languages such as Python or Ruby. Here are some popular php alternatives .
Python is a widely recognized general-purpose high level programming language which is both simple yet powerful. As compared to php, python has fewer lines of code required for similar tasks however provides much more readable syntax therefore making it easier to maintain.
Ruby is a dynamic, open source programming language with a focus on simplicity and productivity. It has an elegant syntax which is natural to read and easy to write. There are a few php inspired alternatives such as php-rails , phpixie or Rubypage however they don't quite match the features php offers leaving users stuck between deciding on php vs ruby for web development.
PHP may be used for backend web development however it's also widely used in many other areas including desktop applications, mobile apps, games etc . If you're looking into starting a career in software development then php might be worth considering if only because of the huge market demand allowing employers to hire at much lower rates than other software languages.
HTML5 is an open standard markup language rather than a programming language; however it offers some php like features such as forms, buttons and storage support. PHP's main purpose is still web development while HTML5 can be used for both web and desktop apps or games allowing you to take php further beyond php vs ruby .
These are php alternatives that have been made popular by the php development community and industry demand. However there are many other languages which can be used for web development such as C# , Clojure or Haskell all of which provide php like abilities to help make your decisions easier.
In conclusion PHP is still going strong, however there are plenty of PHP-like alternatives out there you can choose from based on your personal needs and preferences.