<?php

$srv = localhost;
$usr = username;
$pw = password;
$db = databas;

try {
        $dbh = new PDO("mysql:host=$srv;dbname=$db", $usr, $pw);

        $sql = "SELECT wins, gameplayed FROM score;";

        foreach ($dbh->query($sql) as $data)
        {
                $wins = $data['wins'];
                $gamesplayed = $data['gamesplayed'];
                $loses = $wins - $gamesplayed;

                echo $loses;
        }
        $dbh = null;
}
catch(PDOException $e)
{
        echo $e->getMessage();
}

?>