PHP Profiler with method execution count, times etc. without extensions

Question

Is there any class or library that I can use for profiling, finding bottlenecks, seeing unnecessary execution times etc in my local php environment using beside the CI\'s defaul

Answer 1

XHProf from the Facebook team

http://internetwebsitedesign.biz/tutorials/advanced-codeigniter-profiling-with-xhprof

Code available here:

https://github.com/facebook/xhprof