PHP Code

<?php $this->startSetup(); $this->removeAttribute('catalog_category', 'show_line_name'); $this->endSetup(); ?>

Go to System > Configuration > Catalog > Frond End > Use Flat Catalog Category > Yes

1) Change the directory to magento installation 2) cd app/code/core/Mage/Sales/Model/Quote/Address/Total 3) vi Shipping.php Edit the code at the line number 168

1)Change the directory to the root of magento installation 2)  vi app/etc/modules/Pcode_Attribute.xml and paste the below given content <config> <modules> <Pcode_Attribute> <active>true</active> <codePool>local</codePool> </Pcode_Attribute> </modules> </config> 3) mkdir app//code/local/ 4) mkdir app//code/local/Pcode 5 )mkdir app//code/local/Pcode/Attribute 6) mkdir app//code/local/Pcode/Attribute/etc 7) mkdir app//code/local/Pcode/Attribute/sql 8) mkdir app/code/local/Pcode/Attribute/sql/categoryattribute_setup 9) vi app/code/local/Pcode/Attribute/sql/categoryattribute_setup/mysql4-install-0.1.0.php and paste the below given code <?php $this->startSetup(); $this->addAttribute('catalog_category', 'show_line_name', array( 'group'         => 'General Information', 'input'         => 'select', 'type'          => 'int', 'label'          => 'Show Line Name', 'backend'       => '', 'visible'       => true, 'required'       => false, 'wysiwyg_enabled' => true, 'visible_on_front' => true, 'source' => 'eav/entity_attribute_source_boolean', 'global'        => Mage_Catalog_Model_Resource_Eav_Attribute::SCOPE_GLOBAL, )); $this->endSetup(); ?> 10) vi app//code/local/Pcode/Attribute/etc/config.xm and paste the below code <?xml version="1.0"?> <config> <modules> <Pcode_Attribute> <version>0.1.0</version> </Pcode_Attribute> </modules> <global> <resources> <categoryattribute_setup> <setup> <module>Pcode_Attribute</module> <class>Mage_Eav_Model_Entity_Setup</class> </setup> <connection> <use>default_setup</use> </connection> </categoryattribute_setup> </resources> </global> </config>

<?php $cat = $_product->getCategoryIds(); echo Mage::getModel("catalog/category")->load($cat[0])->getName(); ?>

Comment the below given line in  enterprise_wishlist.xml <!--action method="addLinkBlock"><blockName>wishlist_link</blockName></action-->

You can disable the compiler in two ways 1) Go to System > Tools > Compilation page and click on Disable button 2) Change directory to  the magento installation location .then type the below given commands php -f shell/compiler.php -- disable php -f shell/compiler.php -- clear

 <?php
  Mage::getSingleton('core/session', array('name' => 'adminhtml'));
  $session = Mage::getSingleton('admin/session');
  if ( $session->isLoggedIn() ){
   echo "Admin is logged in";
  }
 ?>

Magento has been programmed to use Event-Observer methodology and can raise events in crucial areas of the flow. Observer is the event handler and it allows us to add our own logic in adition to the core logic without modifying the core code . Event:  An Event is something that occurs in a certain place during a particular sequence flow. Observer :   An Observer is an event handler. It listens to any event it is attached to and accordingly reacts to the event.

Go to System > Configuration > Catalog > Frond End > Use Flat Catalog Product > Yes