Increase in Value button - php

Question

I wish to be able to create a button that increase the number of upvotes and decreases the number of downvotes
$result = mysqli_query($con, "SELECT * FROM champion_counters_b WHERE champion_name='" . $search_result . "'");
echo "<table class='champion_counters' border='1'><tr><th>Champion Counter</th><th>Up Votes</th><th>Down Votes</th></tr>";
while($row = mysqli_fetch_array($result)) {
echo "<tr>";
echo "<td>" . $row['champion_counter'] . "</td>";
echo "<td>" . $row['upvotes'] . "</td>";
echo "<td>" . $row['downvotes'] . "</td>";
}
echo "</table>";
As you can see, I am currently echoing a table until there are no search results left for the input. As you can see $row['upvotes'], $row['downvotes'] these are the things that i'd like to be able to generate a button for, on each row.
"Upvote" => upvotes + 1 => 1, 2, 3, etc
"Downvote" => downvotes - 1 => -1, -2, -3, etc
tl;dr: Would like to be able to generate buttons for each row to increase the number of upvotes and decrease the number of downvotes

Answer 1

This might not be what you are looking for, but as far as I understood, this would be my solution:
You will most probably have some kind of primary key in your database. You do actually get it here as you perform a "SELECT *", e.g. retrieve all columns.
Based on the primary key, you can now implement your down- and upvoting functionality. You could for example insert the following into your while-loop (let $row['key'] be the primary key):
echo "<td><a href='action.php?do=up&id=" . $row['key'] . "'>Upvote</a></td>";
echo "<td><a href='action.php?do=down&id=" . $row['key'] . "'>Downvote</a></td>";
Using this, each table row will have two links which will send the user to an action.php and append some GET-Parameters to the URL. The GET-Parameters are "do", which will tell you what to do (either up or down) and "id", which is the primary key.
In action.php, you can read those GET-Parameters and perform any further action, like updating the database. You can get them like this:
$action = $_GET['do'];
$id = $_GET['id'];
Depending on $action, you can now update the downvotes or the upvotes. You can identify the item to update with $id.