mysql_connect does not work

[<ohannes.berin@xxxxxxxxxxx>]

Hi,

I have PHP5 running on a Debian Linux machine. MySQL is also running. But when I use the function "mysql_connect()" in PHP I get the message 

Fatal error: Call to undefined function mysql_connect() in /var/www/php/test.php on line 10

Is this a setp up issue?

Murat