Variable cannot be used

[keratox]

In index.php I set a variable

$cn = @mysql_connect(............);

Then I include file.inc.php

include("file.inc.php");

In file.inc.php

if($cn==null)
echo "Hello";

And print "Hello".

How can I do for use $cn in file.inc.php ???

[Installer]

Put the code in index.php and see what it does. It looks like your db connection isn't succeeding. Removing the "@" sign when developing code might help, too.