But PHP 7.4 is not compatible in many ways with PHP 7.3, so lumping them together is not OK. As you can see, PHP 8.0 which was only released two years ago, is no longer receiving active support. Definitely, database LTS is not comparable to programming languages. However such rapid releases of breaking versions is a relatively new phenomenon (thanks NodeJS), and I get the feeling that you've never actually supported a software project for 5+ years.