<?
$remote = $_SERVER["REMOTE_ADDR"];
$file = "usersonline.txt";
$timeoutseconds = 60; //Tells how long the user is considered "on line"
$timestamp = time();
$timeout = ($timestamp-$timeoutseconds);
$fp = fopen("$file", "a+");
$write = $remote."||".$timestamp."\n";
fwrite($fp, $write);
fclose($fp);
$online_array = array();
$file_array = file($file);
foreach($file_array as $newdata){
list($ip, $time) = explode("||", $newdata);
if($time >= $timeout){
array_push($online_array, $ip);
}
}
$online_array = array_unique($online_array);
$online = count($online_array);
if($online == "1"){
echo "Users Online: $online";
}else{
echo "Users Online: $online";
}
?>

<?php echo $_SERVER["REMOTE_ADDR"]; ?>

<?php echo $_SERVER["HTTP_USER_AGENT"]; ?>

<?php
$today0 = date('D F d Y g:i a');                // Wed May 07 2003 1:21 am
$today1 = date('F j, Y, g:i a');                 // March 10, 2001, 5:16 pm
$today2 = date('m.d.y');                         // 03.10.01
$today3 = date('j, n, Y');                       // 10, 3, 2001
$today4 = date('Ymd');                           // 20010310
$today5 = date('h-i-s, j-m-y, it is w Day z');  // 05-16-17, 10-03-01, 1631 1618 6 Fripm01
$today6 = date('\i\t \i\s \t\h\e jS \d\a\y.');   // It is the 10th day.
$today7 = date('D M j G:i:s T Y');               // Sat Mar 10 15:16:08 MST 2001
$today8 = date('H:m:s \m \i\s\ \m\o\n\t\h');     // 17:03:17 m is month
$today9 = date('H:i:s');                         // 17:16:17
echo "

$today1<BR>
$today2<BR>
$today3<BR>
$today4<BR>
$today5<BR>
$today6<BR>
$today7<BR>
$today8<BR>
$today9";
?>  

CREATE TABLE `useronline` (

  `timestamp` int(15) NOT NULL default '0',

  `ip` varchar(40) NOT NULL default '',

  `file` varchar(100) NOT NULL default '',

  PRIMARY KEY  (`timestamp`),

  KEY `ip` (`ip`),

  KEY `file` (`file`)

)

<?php
//online users

$server = "YOUR HOST"; // usually localhost

$db_user = "USERNAME";

$db_pass = "PASSWORD";

$database = "DATABASE";

$timeoutseconds = 300; // length of gaps in the count

//get time

$timestamp = time();

$timeout = $timestamp-$timeoutseconds;

//connect to database

mysql_connect($server, $db_user, $db_pass);

//insert the values

$insert = mysql_db_query($database, "INSERT INTO useronline VALUES

('$timestamp','$REMOTE_ADDR','$PHP_SELF')");

if(!($insert)) {

     print "";

}

//delete values when they leave

$delete = mysql_db_query($database, "DELETE FROM useronline WHERE timestamp<$timeout");

if(!($delete)) {

    print "";

}

//grab the results

$result = mysql_db_query($database, "SELECT DISTINCT ip FROM useronline WHERE file='$PHP_SELF'");

if(!($result)) {

    print "";

}

//number of rows = the number of people online

$user = mysql_num_rows($result);

if(!($user)) {

print("ERROR: " . mysql_error() . "\n");

}

//spit out the results

mysql_close();

print("$user");

?>