Redirect only a specific index.php page to new location

[Kory Wheatley <kory.wheatley@xxxxxxxxx>]

When someone types to go to http://sftpinterface/deptblogs/  or a link I need it to redirect to http://intranet/template_departments.cfm.  Which I was able to accomplish in the index.php header content with

<?php

/* Redirect browser */

 header("Location: http://intranet/template_departments.cfm");

/* Make sure that code below does not get executed when we redirect. */

exit;

?>

But the problem is all pages underneath http://sftpinterface/deptblogs  redirect to  http://intranet/template_departments.cfm.  Like I don't want http://sftpinterface/deptblogs/nursing to be redirected to http://intranet/template_departments.cfm.  I want it to stay on that page along with the others.  Only http://sftpinterface/deptblogs or http://sftpinterface/deptblogs/index.php  needs to be redirect to  http://intranet/template_departments.cfm and not the sub directory sites underneath /deptblogs.  What's the possible way of doing this.