How to get the same firebug "network" part information?

Question

Is there any API that can offer access to information of a web page downloading (download CSS/images, time of download, etc ...) ?

Maybe even the interface ?

Answer 1

In Symfony 2.2.0 there is a new feature called stopwatch, it might be useful.

As you might have guessed now, the Stopwatch component provides a way to measure the execution time of specific parts of your code. In Symfony, it is heavily used by the profiler to gather information about what happens during the handling of request and how much time is spent in each layer.

You can read about it here.