PHP Framework for large scale data intensive web development

I would like to know what would be the best MVC framework that can be used give these parameters

1. Ability to handle large DB
2. easy to use and configure
3. secure(session encryption, etc)
4. high performance
5. Available support(community)
6. ability to handle AJAX would be an added benefit, but 开发者_开发技巧not critical

I have been looking all over the web with conflicting results.

Please give your views, Efforts appreciated, thanks!!!

Try Yii Framework. I like the way it designed. And they claim the performance of the framework is outstanding (here is the Yii performance comparison to other PHP frameworks).

If you want to use framework for highloaded website, you can go with any framework you prefer. The bottleneck in highloaded applications is usually a database, so you will have to use different kind of caching mechanisms. Yii supports different kind of caches

To optimize complex SQL queries in Yii, don't use it's ActiveRecord, but use DAO instead.

There is no obvious answer though.

What about Simple PHP Framework?

http://clickontyler.com/simple-php-framework/