Magento redirect url

This function is used for between Magento modules.

<?php $this->_redirect('module/controller/action');
example:- $this->_redirect('customer/account/create');
?>

We can redirect within our current controller by specifying ‘*’.

<?php $this->_redirect('*/*/add'); ?>

Note:- first * is used for module and second * is used for controller.

This function is used for external URL or outside Magento base.

<?php $this->_redirectUrl('http://google.com'); ?>