title: Login Integration in PHP
body: <p>In my host, I currently have installed 2 wordpress applications, 1 phpBB forum and one MediaWiki.</p>
  
  <p>Is there a way to merge the login so that all applications share the same credentials?</p>
  
  <p>For instance, I want to register only in my phpBB and then I want to access all other applications with the given username and password.</p>
  
  <p>Even if you don't know a unified way, what other login integration do you know of? Pros and cons of each?</p>