newbie question regarding mysql_connect

this piece of php:


<?php
require($_SERVER["DOCUMENT_ROOT"]."/config/db_config.php");
$connection = mysql_connect($db_host, $db_user, $db_password) or die("Error 
connecting");
echo "Connection made!";
?>
presents me with a blank page. It's picking up the variables ok from db_conf
ig.php, because if I replace
the;

$connection = mysql_connect($db_host, $db_user, $db_password) or die("Error 
connecting");
echo "Connection made!";

lines to just echo the host, user and password, they all appear on screen fi
ne.

I'm using Mysql 4.0.1.8-nt with Apache2 webserver and PHP5

I'm new to this and i'm guessing that MySQL, apache or PHP is mis-configured
 somewhere.... but I can't
track it down.

Any help appreciated.



All the Best,
John

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