simple create a class file under like D:\xampp\htdocs\FE2U\app\code\local\Rename\User\Helper/Getdata.php
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----------------------------------call in Controller page -----------------------------------------------class Rename_Rename_Helper_Getdata extends Mage_Core_Helper_Abstract{public function getUserName(){if (!Mage::getSingleton('customer/session')->isLoggedIn()) {return '';}$customer = Mage::getSingleton('customer/session')->getCustomer();return trim($customer->getName());}}
Mage::helper('User/Getdata')->getUserName();
Default helper class is Data and this defaults to Yourmodule/Helper/Data.php
Mage::helper('User')->getUserName();
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