PHP MVC Framework list

10- Ambivalence: A Java-Maverick Port
9- WACT: Web Application Component Toolkit
8- Achievo: A good RAD framework
7- Phrame: A Java-Struts port
6- Studs: A Java-Struts port to PHP
5- Prado: The winner of Zend coding contest
4- PHPOnTrax: a Rails port - PHP5 Only
3- CakePHP: Inspired by Rails PHP4/5
2- Mojavi: The first MVC framework I fell in love with

and the winner is:

1- Symfony: Based on Mojavi and inspired by Rails

This list is based on my personal tests and use. I have tested and played with many others, but I think these are the best frameworks out there.
- The first framework I fell in love with was Mojavi because of its elegant way to implement the MVC model.
- Symfony corrected some problems in Mojavi and improved it by taking the good sides of RubyOnRails and Propel.
- CakePHP is very promising, the only problem - really, I don't know if it is a problem - is: the development process is very slow.

PHP 5 Object Model

PHP 5 there is a new Object Model. PHP's handling of objects has been completely rewritten, allowing for better performance and more features. In previous versions of PHP, objects were handled like primitive types (for instance integers and strings). The drawback of this method was that semantically the whole object was copied when a variable was assigned, or passed as a parameter to a method. In the new approach, objects are referenced by handle, and not by value (one can think of a handle as an object's identifier).Many PHP programmers aren't even aware of the copying quirks of the old object model and, therefore, the majority of PHP applications will work out of the box, or with very few modificationsThe new Object Model is documented at the http://www.php.net/manual/en/language.oop5.php