PHP Frameworks need to look into

PHP Framework

Zend

CodeIgniter

Symphony2

CakePHP

Yii

Magento (eCommerce)

reference : http://www.phpframeworks.com/

CMS tools.

Joomla1.7 + VirtueMart (eCommerce)

WordPress3.2

Drupal7

TYPO3

Concrete5

MODX