<?php
$servername = "*******";
$username = "********";
$password = "*******";
$dbname = "********";

// Create connection
$conn = new mysqli($servername, $username, $password, $dbname);
// Check connection
if ($conn->connect_error) {
     die("Connection failed: " . $conn->connect_error);
}
?>
<table>

<thead>
<tr>
<th data-column-id="name">UKW</th>
<th data-column-id="player" data-type="numeric">Longest Time Online</th>
</tr>
</thead>
<tbody>

<?php

$sql = "SELECT name FROM stats_player";
$ss = "SELECT online_seconds FROM stats_player";
$result = $conn->query($sql);
$result2 = $conn->query($ss);

if ($result->num_rows > 0) {
    // output data of each row
    while($row = $result->fetch_assoc()) {

      //  echo "Name: " . $row["name"]."<br>";

$seconds = $result2; //example

$hours = floor($seconds / 3600);
$mins = floor(($seconds - $hours*3600) / 60);
$s = $seconds - ($hours*3600 + $mins*60);

$mins = ($mins<10?"0".$mins:"".$mins);
$s = ($s<10?"0".$s:"".$s);

$time = ($hours>0?$hours.":":"").$mins.":".$s;

  echo "<tr><td>".$row["name"]."</td><td>$time</td></tr>";
    }
} else {
    echo "0 results";
}

?>
</div>

<?php
$conn->close();
?>