Which PHP 5 Version is most commonly used?

问题

When I'm developing applications that would be used on client web serves of different configurations, often with shared hosting, which PHP 5 version should I assume most web servers have, e.g 5.2.x, 5.3.x, etc?

回答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

回答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.

来源：https://stackoverflow.com/questions/5521774/which-php-5-version-is-most-commonly-used