Code Modification of URL Redirection to Allow For Interstitial Ads

Avg Bid (USD)
Project Budget (USD)
$30 - $250

Project Description:
[url removed, login to view]
I am using the above URL shortening script. I just need the code modified so that there is an option to activate interstitial ads like [url removed, login to view] or something similar.
This is an example of a website that does this already.

For example, maybe the website [url removed, login to view] goes to [url removed, login to view] directly. Now it will redirect to temporary page with the interstitial ad.

I'd also like an option in the code that makes it easy to enable and disable the feature. Maybe just changing text from "true" to "false" or something like that.

Skills required:
Graphic Design, HTML, PHP, Website Design
About the employer:
Public Clarification Board
Bids are hidden by the project creator. Log in as the employer to view bids or to bid on this project.
You will not be able to bid on this project if you are not qualified in one of the job categories. To see your qualifications click here.

$ 79
in 3 days
$ 170
in 5 days
$ 150
in 1 days
$ 250
in 4 days
Hire WG8wR46Nv
$ 140
in 1 days