Did U heard about Lasso, Scala, Lua, Tcl, Smalltalk, C++, Haskell, Lisp, Ada ? No? Probably not – they together are used on under 0,1% of websites… guess who is on 1st place ?
PHP 81.3%
ASP.NET 16.6%
Java 3.0%
Static files 1.6%
ColdFusion 0.7%
Ruby 0.6%
Perl 0.5%
Python 0.2%
Javascript 0.2%
Erlang 0.1%
Percentages of websites using various server-side programming languages
Source: W3Techs.com, 24 August 2015
http://w3techs.com/technologies/overview/programming_language/all
Note: a website may use more than one server-side programming language.