What is the Difference between controller and Blocks

[magento_sage1]

Hi Folks,

Another concern is:

What is the Difference between controller and Blocks ?

Thanks

[Swissuplabscom]

Please cehck following thread:

https://stackoverflow.com/questions/14283920/magento-model-vs-block-vs-controller-etc

[Manthan Dave · Accepted solution]

Hi @magento_sage1

Below is the main difference between controller and block !

Block are responsible for rendering content (everything from frontend, backend, emails, and more). If content is being displayed somewhere chances are it is a block.

controllers are responsible for processing all requests made via a url. If you hit the url http://www.example.com/catalog/product/view/id/9/ you hit the catalog module in the controllers/ProductController.php and inside of that the viewAction() method. If you hit a URL in Magento the request passes through one or more controllers.

For more details refer below links : 

https://stackoverflow.com/questions/14283920/magento-model-vs-block-vs-controller-etc

https://magento.stackexchange.com/questions/19777/relationship-between-block-controller-and-model-ma...

Hope it helps !