How to get logged in customer's details in Magento

If you want to get logged in customer's details in Magento. 

You can use following code:

<?php

  // Check if any customer is logged in or not
if (Mage::getSingleton('customer/session')->isLoggedIn())
{

// Load the customer's data
$customer = Mage::getSingleton('customer/session')->getCustomer();

$customer->getPrefix();
$customer->getName();                    // Full Name
$customer->getFirstname();            // First Name
$customer->getMiddlename();       // Middle Name
$customer->getLastname();           // Last Name
$customer->getSuffix();

// All other customer data
$customer->getWebsiteId();
$customer->getEntityId();
$customer->getEntityTypeId();
$customer->getAttributeSetId();
$customer->getEmail();
$customer->getGroupId();
$customer->getStoreId();
$customer->getCreatedAt();
$customer->getUpdatedAt();
$customer->getIsActive();
$customer->getDisableAutoGroupChange();
$customer->getTaxvat();
$customer->getPasswordHash();
$customer->getCreatedIn();
$customer->getGender();
$customer->getDefaultBilling();
$customer->getDefaultShipping();
$customer->getDob();
$customer->getTaxClassId();
}
?>