I know PHP and i did some small applications using PHP.. Now i have planned to do some big applications.. Some peoples saying that it is important to learn anyone framework like codeigniter, cakephp, zend,. Is learning Framework is important for developing a application ?? What is your idea ??
Yes, PHP framework is important to build your application fast and robust. There are plenty of functions and feature built into the framework that you might not realized. So its better to use framework , On addition I would like to mention Open source scripts on Content management systems ( Joomla, Wordpress, Drupal ) and E-commerce shopping systems ( Magento, Xcart, Zen Cart, Oscommerce etc ) If you know your requirement as well as open source scripts available in market you can build your application fast and efficient. Best of luck