Im looking for a PHP script. Preferably just PHP, no MySQL. I have spent the past 3 hours looking but havn't found one yet!

Requirements:
Log the last 20 visitors and then overwrite the last one sort of thing one by one so there is always 20 there and it will update the new one and knock the oldest one off the end.

Anyone have a script like that and can link to it or email me with it please?

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