Which PHP 5 Version is most commonly used?

Question

当我开发将用于客户端Web服务的应用程序具有不同的配置（通常与共享主机一起使用）时，我应该假定大多数Web服务器都具有哪个PHP 5版本，例如5.2.x，5.3.x等？

Answer 1

Version 5.2 is used by 84.9% of all the websites who use PHP version 5.

Version 5.3.3 is used by 39.7% of all the websites who use PHP version 5.3

You can see more statistical data from the following link:

http://w3techs.com/technologies/details/pl-php/5.3/all

Answer 2

WordPress.org also collects stats about installs, you can see results here: WP stats

August 2014 it it 78% for 5.2 & 5.3 which are supposed EOL.