PDT autocomplete broken in Eclpise

Suddenly I can't use autocomplet开发者_Go百科e in my Eclipse PHP projects. When I press alt+/ I jsut hear a dummy sound. Which settings should I check?

Try this. Right-click your top level folder in PHP Explorer. Select the "Configure" menu item then "Add PHP Support".

Does you PHP Language Library include a link to your local PHP install? Sometimes I've found my project gets corrupted, and that PHP gets stripped from that include.

In this situation, simply reloading Eclipse helped.

For me, simply choosing 'Project > Clean' restores auto/code completion. (Eclipse 3.7.0 Indigo with PDT 3.0)

For me I needed to re-create my workspace (was using a workspace from an older version of PDT). Copying then importing the projects into the new workspace still worked.