http://www.techempower.com/benchmarks/#section=data-r8&hw=i7...
http://www.techempower.com/benchmarks/#section=data-r8&hw=i7...
If you want to compare performance, do it yourself, don't believe someone else's benchmarks. Write a test case that is suitable for your reality, then go for a conclusion.
One framework for PHP developers that is worth looking into is Laravel. Very clean and reasonable framework. Have a look at it here: http://laravel.com/
For example, it has ActiveRecord by default, so you're focued around data stores... ideal for CRUD, but then its libraries to generate and validate forms are like something from 2008.
I'm a bit bemused as I must be missing something, given its popularity. Perhaps the apps I build are not a good fit for it - I'd be keen to have your input.
But not released yet, no vibrant community, it is like sensio's internal framework before symfony was released.