Where to keep simple counter value (except DB and File) [PHP]
<p>I have a counter which I increment every page visit.  I do not want to keep this value in DB or in plain file.  Is there any other approach to keep it?</p>

<p>I need keep it for next visit. In the next visit I want to read it, increase and keep again.</p>

<p>Why I do not want to use DB?  Because in whole project I'm not using DB it's simple project.</p>

<p>Plain file it's maybe the easiest solution. And every concurrency access can be solved by PHP.
But maybe is there anything easier and lightweight than plain file (in performance sense ?</p>
