Advanced CodeIgniter Profiling With XHProf | Envato Tuts+

There are a number of ways to profile and monitor the performance of PHP code in a development environment, but once it's been let loose on a production server its extremely difficult to know what's going on when your app is getting accessed by your users. In March 2009, Facebook released XHProf, a function level profiler that allows you to identify bottlenecks in your application. And it runs on