Ordering SQL results by combined value of row in database - php

Question

This is going to be a confusing one.. I'll try to explain it and provide as much information as possible. Basically, what I have is a website where people can upload the amount of kills they get in a game. What I'd like to do, is display people's combined, confirmed kills on a leaderboard.. This is proving harder than I expected (LOL).
Here's what my database looks like:
submission is the unique id of the entry.
usergt is the user's gamertag.
image is not important.
userkilled is the person they have killed.
status is the status of the confirmation of the kill.
conftotal is the total kills that we confirmed from the image (eg. entry 5 recorded 24 kills).
submitted is simply a unix timestamp of the submission date and time.
Here's my PHP on the page itself:
<?php
function getKills($gamertag) {
$conn = new mysqli("localhost", "rpsanet_seals", "k_,2N2Xbu}mr", "rpsanet_seals");
if ($conn->connect_error) {die("Connection failed: " . $conn->connect_error);}
$sql = "SELECT conftotal FROM kills WHERE usergt='" . $gamertag . "'";
$result = $conn->query($sql);
$ctotalklls = 0;
if ($result->num_rows > 0) {
while($row = $result->fetch_assoc()) {
$ctotalklls = $ctotalklls + $row["conftotal"];
}
} else {
$ctotalklls = 0;
}
return $ctotalklls;
$conn->close();
}
?>
<div class="mykills_content">
<table class="mykills_table">
<tr>
<th class="mk_first">Avatar</th>
<th>Gamertag</th>
<th>Latest Victim</th>
<th class="mk_last">Total Kills</th>
</tr>
<?php
$conn = new mysqli("localhost", "rpsanet_seals", "k_,2N2Xbu}mr", "rpsanet_seals");
if ($conn->connect_error) {die("Connection failed: " . $conn->connect_error);}
$sql = "SELECT *, COUNT(*) AS magnitude
FROM kills
WHERE status='confirmed'
GROUP BY usergt
ORDER BY magnitude ASC
LIMIT 5";
$result = $conn->query($sql);
if ($result->num_rows > 0) {
while($row = $result->fetch_assoc()) {
echo '
<tr>
<td class="mykills_submission" data-submission="' . $row["submission"] . '">
<div class="mykills_avatar">
<img src="https://avatar-ssl.xboxlive.com/avatar/' . $row["usergt"] . '/avatarpic-l.png" class="mykills_victim_avatar" draggable="false" />
</div>
</td>
<td>
' . $row["usergt"] . '
</td>
<td>
' . $row["userkilled"] . '
</td>
<td>
' . getKills($row["usergt"]) . '
</td>
</tr>
';
}
echo '</table>';
} else {
echo '</table><div class="fw-nokills">You have not submitted any kills yet.</div>';
}
$conn->close();
?>
</div>
</div>
and this is what it looks like on the page:
I have no idea what I've done wrong or how to fix it. As you can see, the order is incorrect. It should go CheapApples12, then KILLER C00KIE X, then ancrobbo97.
If anything else is not clear, or any other info is needed, just comment and I'll get that to anyone as soon as I can..
I appreciate any help in advance :)
IMPORTANT INFO: The "Total Kills" that are being shown in the screenshot above are being generated from the getKills() function, not the database query result.

Answer 1

Try this simple one liner use sum(conftotal) and use order by sum(conftotal)
SELECT *,sum(conftotal) as totalkills FROM kills WHERE status='confirmed' GROUP BY usergt ORDER BY totalkills desc

Answer 2

SELECT x.avatar, x.gamertag, x.magnitude AS magnitude FROM
( SELECT avatar,gamertag, COUNT(*) AS magnitude
FROM kills
WHERE status='confirmed'
GROUP BY usergt
LIMIT 5
) AS x
ORDER BY magnitude ASC
I can't test what I wrote, but I think you can get the logic out of it.
Using subqueries is slower, but they are quite powerfull.

Answer 3

As I understand you want a descending order to be displayed based on the TotalKills count, please try using the following query.
"SELECT *, COUNT(ref_column_name) AS magnitude
FROM kills
WHERE status='confirmed'
GROUP BY usergt
ORDER BY magnitude desc"