magento 设置全局变量 (Session 和 Registry)

1. Magento: Get and set variables in session

To set a Magento session variable:

$myValue = 'Hello World';
Mage::getSingleton('core/session')->setMyValue($myValue);

To Retrieve:

$myValue = '';
$myValue=Mage::getSingleton('core/session')->getMyValue();

To Unset:

Mage::getSingleton('core/session')->unsMyValue();

或者

/* Core Session */
Mage::getSingleton('core/session')->setYourVariable('data');
$Data = Mage::getSingleton('core/session')->getYourVariable();

/* Customer Session */
Mage::getSingleton('customer/session')->setYourVariable('data');
$Data = Mage::getSingleton('customer/session')->getYourVariable();

/* Admin Session */
Mage::getSingleton('admin/session')->setYourVariable('data');
$Data = Mage::getSingleton('admin/session')->getYourVariable();

2. Magento’s Registry Pattern

The three registry methods are

Mage::register
Mage::unregister
Mage::registry

The

register

method is how you set a global-like variable.

Mage::register('some_name', $var);

Then, later in the request execution, (from any method), you can fetch your variable back out

$my_var = Mage::registry('some_name');

Finally, if you want to make you variable unavailable, you can use the

unregister

method to remove
it from the registry.

Mage::unregister('some_name');