| > Today, PHP is used by more than 80% of all the websites _whose server-side programming language we know_ I find it pretty annoying that they don't post stats on the websites that they couldn't classify. I think it's likely that their survey suffers from some level of survivorship bias: only websites that loudly announce their tech stack get counted. So, how do they know which programming language is being used by a server? From https://w3techs.com/faq, they look at: - HTML elements of web pages - Specific HTML tags, for example the generator meta tag - The URL structure of a site - HTTP headers, for example cookies - HTTP responses to specific requests, for example compression I typically run Python / Django sites, and the only way, that you would know I'm running Python is a few Django-specific security/auth cookies. _Maybe_ that stuff gets picked up by their crawler. If I was running another Python web framework, like Flask, then you'd have no idea what kind of app server was sitting behind NGINX. |