Lets say I have a website `www.mySite.com` and there are a lot of pages whose links are `www.mySite.com\contact.php` and `www.mySite.com\about.php`.

What if I want that when someone enters a direct link like `www.mySite.com\about.php` instead of opening that page it should go to a page `myPolicy.php` and then `myPolicy.php` may\may not refer the user to the requested page....

**HOW to do IT**

One method I thought is have a PHP page `myPolicy.php` and include\require it in beginning of every page so than I can decide weather to continue the requested page or redirect somewhere else or not.... 

Is that okay?

Is there a better way or some best practice for this kind of thingy?