title: Joomla custom component migration from 1.5 to 2.5
body: <p>I have migrated my site from Joomla 1.5 to Joomla 2.5. There is a custom component developed by 3rd party which is not working properly in Joomla 2.5. 
  Now, I am facing challenges to get this done in the new version. I am not aware of the functions used in the component that are not working or throwing errors.</p>
  
  <p>Can anyone share a list of Joomla 1.5 component development functions which are deprecated in Joomla 2.5 or should be updated?</p>
  
  <p>For e.g. see the following functions/variable:</p>
  
  <pre><code>global $mainframe; // In Joomla 1.5
  
  $mainframe =&amp; JFactory::getApplication(); // In Joomla 2.5
  </code></pre>
  
  <p>I just want to make myself more clear that I am looking for joomla custom component migration from 1.5 to 2.5. Any help would be appreciated. Thanks in advance.</p>