How do I add a random number to an Image or iFrame invocation tag in place of insert_random_number_here?
Image and iFrame invocation tags have a placeholder for a random number which is used to prevent users from caching a URL’s content in their browser, preventing new banners from being freshly loaded. Other invocation tag types automatically provide a random number. Without a random number attached to the invocation tag, it may prevent the banners from being rotated properly and a valid impression might not be recorded. You can add a random number to these tags’ client-side by using JavaScript, or their server-side by using a programming language like PHP or ASP An example in PHP would be: 