Easy Theme Switcher

安装

Extract the zip file and just drop the contents in the wp-content/plugins/ directory of your WordPress installation and then activate the Plugin from Plugins page.

Usage

You can just enter the url in this way:
http://yoursite.com/?theme=yourtheme

Or use the function esw_set_theme in this way:

A Session will be created, so you don’t need to use this function on every page refresh or pass the GET parameter.