A project's properties pages allows you to configure various settings for a specific project.
Project's properties can be accessed by right-clicking the required project and selecting Properties -or- selecting the project and from the menu bar going to Project | Properties.
The properties available will depend on the resource selected. The following properties are available for PHP projects:
Properties pages are configured for a specific project only. To configure settings for all PHP projects, go to the PHP preferences pages (Window | Preferences | PHP).