Determine Click-thru Percentage With PHP

Posted by Lea on Stack Overflow See other posts from Stack Overflow or by Lea
Published on 2010-03-14T10:17:37Z Indexed on 2010/03/14 10:25 UTC
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Hi all,

I am currently working on a small sponsorship application(PHP/MySql) for my personal blog, and am almost finish, but I am stuck on how to calculate the click-thru rate of my sponsors campaigns.

I was always terrible with working out percentages, so any practical help would be appreciated. The data is stored in the DB as simple numbers.. So as expected, when a page refreshes, or a sponsors ad is clicked, the data updates with an incrementation of 1.

So using these values...say $clicks and $impressions, how would I determine the click-thru rate? What would be the sum I would use to calculate? An example function would really be appreciated.

Kind Regards, Lea

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