title: Why does Eclipse code completion not work on some projects?
body: <p>I have Eclipse 3.3.2 with PDT doing PHP development.
  All projects that I create, even SVN projects have code completion.
  Now I just opened another SVN project and it has no code completion or PHP templates (CTRL-space does nothing in that project).
  However, I can open the other projects and code completion all work in them.</p>
  
  <p>Why would code completion and templates be "off" in just one project and how can I turn it back on?</p>