php3: unsupported or undefined function

[Guido Bozzetto <GB@Nauta.it>]

I'm trying to use postgreSQL and php3 together but don't work.
I've seen the php3 installed files and also the calendar php3
module don't work. What's wrong, what can I do ?
Here are the messages:

Fatal error: Call to unsupported or undefined function pg_connect()
Fatal error: Call to unsupported or undefined function gregoriantojd()

The installed packages:

||/ Name            Version        Description
+++-===============-==============-============================================
ii  php3            3.0-2          A server-side, HTML-embedded
scripting langu
ii  php3-doc        3.0-2          Documentation for PHP3
ii  php3-pgsql      3.0-2          PostgreSQL module for PHP3
ii  libpgsql        6.3.2-8        Shared library for PostgreSQL
ii  php3-pgsql      3.0-2          PostgreSQL module for PHP3
ii  apache          1.3.0-2        Versatile, high-performance HTTP
server
ii  apache-doc      1.3.0-2        Apache documentation

Thanks,
                               Guido.
-- 
+----------------+------------------------------------+
| Guido Bozzetto | Office phone & Fax: +39 432 548314 | Il sunadôr 
|   \/     I     | E-mail:   :-)   mailto:GB@nauta.it |   pajât prime
|   OO     like  | Web:http://www.nauta.it/~bozzetto/ | nol à mai fat
|   --     Linux | Talk:            gb@cosmo.nauta.it |   buine mùsiche!
+----------------+------------------------------------+


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