如何使用PHP在线显示用户？

Question

This code only shows "1 User(s) Online" no matter how many are online. How do I fix that?

<?php
$con = mysqli_connect($host, $username, $password , $database)
or die('Error connecting to MySQL server.'); 
$online = "1";
$query = "SELECT * FROM `users` WHERE online = '$online'";
$data = mysqli_query($con, $query);
$row = mysqli_fetch_array($data);
$online=$row['online'];
echo '<div id="online-me" class="mydiv3"><center><span id="stats">'.$online.' User(s) Online!</span> </center></div>';
?>

Answer 1

So with

$query = "SELECT * FROM `users` WHERE online = '$online'";

You are getting the row where online = 1 . Then you set $online=$row['online']; which just sets $online to 1 no matter what.

That should give you an idea of how to fix it. Cheers! Good luck!

Answer 2

use the count() of MySql also use mysqli_fetch_assoc instead of mysqli_fetch_array

something like this

<?php
$con = mysqli_connect($host, $username, $password , $database)
or die('Error connecting to MySQL server.'); 
$online = "1";
$query = "SELECT count(id) as 'total' FROM `users` WHERE online = '$online'";
$data = mysqli_query($con, $query);
$row = mysqli_fetch_assoc($data);
$online=$row['total'];
echo '<div id="online-me" class="mydiv3"><center><span id="stats">'.$online.' User(s) Online!</span> </center></div>';
?>