I am new to both PHP and PostgreSQL. Trying to install PHP and PostgreSQL 8.0 on Slackware Linux 10.0.0 . I am getting the following error out of Apache: "Fatal Error: Call to undefined function: pg_connect() ...." PostgreSQL is up and running, and appears to be fine. Have found a lot of web references to this; the best was http://us2.php.net/pgsql . But am unable to proceed because I am not sure what to do. Facts about what I have installed: - Installed PHP from Slackware binary; I made no special efforts to compile it. According to a PHP utility function (phpinfo()), looks like it might be configured for MySQL already. - version info: PHP = 4.3.7 Linux kernel = 2.4.26 Apache = 1.3.31 How do I find these functions and install OR configure the php.ini file? I don't think this is hard to fix, but it is beating me up right now. What I need to find a blow-by-blow of what to do. Can somebody help me?