why don't you create a vars.inc.php file and have those variables there?
so you can include the vars.inc.php file into up1.php, up2.php, and so on..
the files would be like this:
vars.inc.php
$Title_up1 = "Title Update 1";
$Author_up1 = "Me";
$Date_up1 = "3/2/03";
$Title_up2 = "Title Update 2";
$Author_up2 = "New Author";
$Date_up2 = "3/12/03";
......
(you can alternatively use define();
http://www.php.net/define
up1.php
include 'vars.inc.php';
echo $Title_up1;
// rest of your page content
up2.php
include 'vars.inc.php';
echo $Title_up2;
// rest of page content...
and so on...
If you don't want to go that route...
You can use fopen() to open the file and
some sort of regular expression or string/array search
look into: strstr(), in_array(), file_get_contents()
Hope this is somewhat helpful.