How to manually specify syntax highlighting for a specific extension in Eclipse?

Question

I am editing some files with the extension \'.ctp\'. Although these files are perfectly valid PHP files, Eclipse doesn\'t seem to know that and refuses to do any syntax highligh

Answer 1

In Preferences, go to General -> Content Types. Unfold Text, then go to PHP Content Type. Click Add and input *.ctp. Then apply your changes.

You may need to restart eclipse to take effect.