在Trott解释之前，分析中没有这样的功能。不过，我给你一个非常非常古老的选择。我在2004年写了这个，所以它过时了，但基本上是有效的。此外，它可以在不使用任何数据库的情况下运行。有时您需要这样的复古解决方案：） b

现场演示： kopli.pri.ee/***/6976362.php

 <？php 
 $ current_users_file ='users.txt'; 
 if（！file_exists（$ current_users_file））fclose（fopen（$ current_users_file，w））; 
 $ users = file（$ current_users_file）; 
 $ found = false; 
 $ user_count = count（$ users）; 
 $ fp = fopen（$ current_users_file，w）; 
 foreach（$ users为$ user）{
 $ user = explode（|，$ user）; 
 if（$ user [1] +300< time（））{
 $ user_count--; 
继续; 
} elseif（$ user [0] == $ REMOTE_ADDR）{
 $ user [1] = time（）; 
 $ found = true; 
} 
 $ user = trim（implode（|，$ user））。\\\
; 
 fputs（$ fp，$ user）; 

 if（！$ found）{
 fputs（$ fp，$ REMOTE_ADDR。|.time（）。\\\
）; 
 $ user_count ++; 
} 
 fclose（$ fp）; 
 echo'活动用户< b>'。 $ user_count。 &LT; / B个; 
？> 
 

How can I show the number of visitors online at any page load via Google analytics?

E.g., when a visitor loads the page somewhere it will say "58 Visitors Online".

As Trott explained before, there is no such function in analytics. However, I give you a very very old alternative. I wrote this in 2004, so its outdated, but basically works. Also, it works without using any databases.. sometimes you need retro-solutions like this :)

Live demo: kopli.pri.ee/***/6976362.php

(You need to set 777 chmod for your current folder, so users.dat could be created automatically)

<?php
$current_users_file = 'users.txt';
if (!file_exists($current_users_file)) fclose(fopen($current_users_file, "w"));
$users = file($current_users_file);
$found = false;
$user_count = count($users);
$fp = fopen($current_users_file, "w");
foreach($users as $user) {
    $user = explode("|", $user);
    if ($user[1]+300 < time()) {
        $user_count--;
        continue;
    } elseif ($user[0] == $REMOTE_ADDR) {
        $user[1] = time();
        $found = true;
    }
    $user = trim(implode("|", $user))."\n";
    fputs($fp, $user);
}
if (!$found) {
    fputs($fp, $REMOTE_ADDR."|".time()."\n");
    $user_count++;
}
fclose($fp);
echo 'Active users <b>' . $user_count . '</b>';
?>