PHP /SESSION: Login one per user?
<p>How can i do so only 1 can be online for the 1 user at the time? Idea ?</p>

<p>So you e.g can not login to User1 on one pc/browser and then on the other pc/browser login to User1?</p>

<p>I have my communitysystem in PHP, and it stores in sessions.. </p>
