How can I add some code to this to remove a user from being online from the database if they have not hit the site within say 15 minutes.
<?php
$server = "xxxx";
$db_user = "xxxx";
$db_pass = "xxxx";
$database = "xxxx";
$timeoutseconds = 300;
$timestamp = time();
$timeout = $timestamp-$timeoutseconds;
mysql_connect($server, $db_user, $db_pass);
$insert = mysql_db_query($database, "INSERT INTO useronline VALUES ('$timestamp','$REMOTE_ADDR','$PHP_SELF')");
if(!($insert)) {
print "Useronline Insert Failed > ";
}
$delete = mysql_db_query($database, "DELETE FROM useronline WHERE timestamp<$timeout");
if(!($delete)) {
print "Useronline Delete Failed > ";
}
$result = mysql_db_query($database, "SELECT DISTINCT ip FROM useronline WHERE file='$PHP_SELF'");
if(!($result)) {
print "Useronline Select Error > ";
}
$user = mysql_num_rows($result);
mysql_close();
if($user == 1) {
print("<b>$user</b> user online\n");
} else {
print("<b>$user</b> users online\n");
}
?>
