From Docu:

Example 4-1. UNIX include_path

include_path=.:/home/httpd/php-lib

This is wrong for the apache httpd.conf.

This gives an error like this:
Syntax error on line 250 of /usr/local/apache/etc/httpd.conf:
Invalid command 'php3_include_path=.:/usr/local/apache/share/htdocs/_global', perhaps mis-spelled or defined by a module not included in the server configuration

Problem solved with this entry in httpd.conf:
php3_include_path .:/usr/local/apache/share/htdocs/_global


Bye Michael

P.S.: keep up the good work!