I installed Eclipse SDK Indigo and then followed the following instructions to install PDT on it:
This is the original solution posted by ben-k link to the topic: Eclipse indigo PDT 3.0 gotcha
download "Eclipse Classic" unzip/install to a new folder location (e.g. c:\eclipse-indigo-win32\ go to help->install new software select Indigo - http://download.eclipse.org/releases/indigo from
the "Work with" drop down list type "php" in the filter text Select "PHP Development Tools (PDT) SDK Feature select /next/ok/agree/finish etc.. wait for install and restart when prompted
to check installation version - go to help->about then click the "Installation Details" button - look for the version next to "PHP Development Tools (PDT) all-in-one SDK v3.0.0" - also check "Eclipse SDK" should be 3.7.0
ensure perspective is selected, - next to perspective buttons - click icon with "+" symbol - select "other" - highlight "PHP" - select "OK, PHP will now be included in the list of open perspectives
But I am unable to enable the feature of highlighting the syntax error for a file which I load in Eclipse without creating a project in it.
Anybody any clue?
P.S. Btw I am a happy user of Eclipse PDT Helios and was able to update that without any problems. Error highlighting is working perfectly in it.