Magento Attributes update using code

<?php
$_product = Mage::getModel(‘catalog/product’)->load($productID);
//    SET ATTRIBUTE VALUES
$_product->setData(‘my_custom_attribute1′, ‘value1′);
$_product->setData(‘my_custom_attribute2′, ‘value2′);
$_product->setData(‘my_custom_attribute3′, ‘value3′);
-----------------------------------
------------------------------------
and so on as many as you like as per requirement
$_product->save();
?>