Fatal error: Call to undefined function: mysql_connect() in

[chairul]

Hi,
I run cacti on RedHat Linux
-kernel 2.4.20
-mysql-3.23.55
-php-4.3.1
-httpd-2.0.44
-rrdtool-1.0.41
-cacti-0.68a

I try to browse to: http://myserver/cacti/ for the first time:
and got this error message:
Fatal error: Call to undefined function: mysql_connect() in /home/httpd/htdocs/netmon/include/database.php on line 19

Please help

Chairul