Getting eGroupware PEAR errors?

This had me foxed for a while.

My eGroupware Version 1.3.015 install recognised PEAR and installed without a hitch.

However on using the application, errors state that PEAR cannot be located in the include path "include_path='/usr/share/egroupware/egw-pear:.'"

This had me baffled as this path was completely different to that stated in my php.ini file.

Then I found this on the Debian mailing lists:

Edit your apache site configuration file for eGroupware (must be
under /etc/apache2/sites-availaible/) and under the
section, add the line 'php_value include_path .:/usr/share/php/'

Bingo.