Choosing high performance PHP5 framework [closed]

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I'm exploring options for a PHP5 framework (to migrate old codebase).

Requirements:

• High performance (project gets ~10 million daily hits & is growing rapidly)
• Popular & mature
• Actively developed
• Good support of components & web services

What could be the options? Pros & cons.

I'm looking into Yii, Zend. But other opt开发者_Python百科ions are welcome.

Also we have experience with Ruby On Rails so built-in similar ActiveRecord pattern would be great.

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Symfony will be a good option for you. Its somewhat similar to ROR. Now its version 2, which is php 5.3. You can use symfoy 1.4 or so, if you don't wish to choose 5.3. Regarding the performance, you can never expect high performance using any framework. You need to focus on other optimizations like caching, db replication etc.