How to fix "Direct use of $_SERVER Superglobal detected' in Magento 1

Question

Using the $_SERVER super global in an extension causes the following guideline error

Direct use of $_SERVER Superglobal detected

I know the alternative for Magento 2 but how do you solve this for Magento 1?

Answer 1

To access a variable globally, you can use session in magento1.

$session = Mage::getSingleton("core/session");
$session->setData("your_variable", "your value");

// Now you can retrieve your data elsewhere or even after the next request:
$session = Mage::getSingleton("core/session");
$yourVariable = $session->getData("your_variable");