CodeIgniter also has no conception of how to actually work in PHP5.3. Perhaps CodeIgniter will acquire that down the road, but right now it's a poor routing kernel surrounded by a lot of inconsistent and very ugly modules that are duplicated or improved upon in the other major frameworks in common use.

"Doesn't require a lot of coding" is nonsensical; I can build a Symfony2 application to do nontrivial task in less time, with better and more reliable code, than I can the equivalent in CodeIgniter. And I used CodeIgniter since around the time of the original release. There are not many cases where something is top-to-bottom dominant in its field, but aside from documentation, which is being improved upon incrementally, Symfony2 really does fit that bill.