I used ThinkPHP before, somehow it is not very stable for production. I found two top rated frameworks: CodeIginter and YII framework. I will try these two frameworks later.

Google Analytics is the enterprise-class web analytics solution that gives you rich insights into your website traffic and marketing effectiveness.

Add a profile for your website and put the code in your page. Then Google will track your visitors and analyze their actions. It is helpful for your business, and you can learn more from the report.