title: What are session.bug_compat_42 and session.bug_compat_warn?
body: <p>I know this topic is bit old, but i did surf the web and php.net site but didn't find the answer that I was looking for or i got bit confused!! :( . Below is my scenario.</p>
  
  <p>I have installed the latest WAMP (fresh copy) (PHP 5.3.1 Apache 2.2.14 MySql 5.1.36)</p>
  
  <p>I installed the joomla 1.5.20 and was getting error on 2nd step with error regarding cookie not being stored or error with session.save_path.</p>
  
  <p>After looking into session.save_path everything was good and also the cookies were stored. So no issues were there.</p>
  
  <p>After debugging more into joomla files and changing configuration of php.ini file I found that changing the parameters of session.bug_compat_42 and session.bug_compat_warn  to off in php.ini file, the installation went good.</p>
  
  <p>This might help some one. But my question is, how does this affect the installation of joomla and how exactly both the values makes difference to php!!?? </p>
  
  <p>Can some one please give me bit more information.
  Thanks,
  Tanmay</p>