<?php
$timeout = 5; //Change this if you want. Default is 5 seconds.
//###################### CALCULATE USERS ONLINE #########################
$userip = $_SERVER['REMOTE_ADDR'];
$time = time();
$usersonline = 0;
$alreadyonline = 0;
$onlinetxt = fopen("./online.txt","r+");
flock($onlinetxt,2);
while (!feof($onlinetxt))
$user[] = chop(fgets($onlinetxt,65536));
fseek($onlinetxt,0,SEEK_SET);
ftruncate($onlinetxt,0);
foreach ($user as $line) {
@list($savedip,$savedtime) = split("\|",$line);
if ($savedip == $userip) {
$savedtime = $time;
$alreadyonline = 1;
}
if ($time < $savedtime + ($timeout)) {
fputs($onlinetxt,"$savedip|$savedtime\n");
$usersonline = $usersonline + 1;
}
}
if (!$alreadyonline) {
fputs($onlinetxt,"$userip|$time\n");
$usersonline = $usersonline + 1;
}
fclose ($onlinetxt);
echo "<div id=\"online\"><strong>Online</strong>: ".$usersonline."</div>";
?>
