In magento if we have to enhance some helper classes of core files then according to magento standard format we have to override that class in our own Local Module. For that we need to create our own module and to make the chnages in local module config.xml file, and some changes in our own module helper class. To override the Helper classes we have to add tag under module name. Let us take an example that we need to override Mage_Checkout_Helper_Data then below is the code we need to write in our config file under global node....

In magento if we have to enhance some model classes of core files then according to magento standard format we have to override that class in our own Local Module. For that we need to create our own module and to make the chnages in local module config.xml file, and some changes in our own module Model class. To override the Model classes we have to add tag under module name. Let us take an example that we need to override Mage_Sales_Model_Quote_Address Mage_Sales_Model_Quote...

In Magento if we have to enhance some block classes of core files then according to Magento standard format we have to override that class in our own Local Module. For that we need to create our own module and to make the changes in local module config.xml file and some changes in our own module Block classes. ...

A code pool is a unique directory under Magento app/code/ directory that consist of grouped code.As usual it identifies a high level of code organization....

Before running Magento on server we need to set several permission on server otherwise the site will give Internal server error due to insufficient permission of folders and files....

How to check that a customer is logged-in or not and to get the information of that logged in customer . ...

Magento has released the new security patches SUPEE-7405 on January 20th 2016 This patch is Critical for Magento Enterprise Edition prior to 1.14.2.3 and for Community Edition prior to 1.9.2.3 , this is bundle of patches for Magento Ver 1.x that will resolve server security related issues. ...

In PHP we have different types of functions to sort the array. We can use these sorting functions when we want to display the array in some order . These sorting functions make our task easier .Some of the important array sorting functions are...

array_merge merges the elements of one or more than one array such that the value of one array appended at the end of first array. If the arrays have same strings key then the later value overrides the previous value for that key ....

Object is an concrete entity constructed using the blueprint provided by class. The class specifies the behaviors and characteristic of object but it does not specify the value of those characteristics. With a single class we can make several instances of the same class .In OOP we can make object from class by instantiation. For creating a new object we use the word new to instantiate a class....