<?php
$username="root";
$password="egern";
$database="philipk";

mysql_connect(localhost,$username,$password);
@mysql_select_db($database) or die( "Unable to select database");
?>

via include(sql.php) i index.php:

include(sql.php)

<h2>
<?php
$data = mysql_query("SELECT * FROM indhold WHERE id = 1");
$result = mysql_fetch_assoc($data);
echo($result['overskrift']);
?>
</h2>