Vapor winter sale

<?php

$input = explode(", ", readline());

$games = [];
$gamesWithDlc = [];
for ($i = 0; $i < count($input);$i++){
    if (strstr($input[$i], "-")) {
        list($gameName, $price) = explode("-", $input[$i]);

        if (!key_exists($gameName, $games)) {
            $games[$gameName]['price'] = floatval($price);
        }
    } else if (strstr($input[$i], ":")) {
        list($gameName, $dlc) = explode(":", $input[$i]);

        if (key_exists($gameName, $games)) {
            $games[$gameName]['dlc'] = $dlc;
            $games[$gameName]['price'] = ($games[$gameName]['price'] * 0.2) + $games[$gameName]['price'];
        }
    }
}

foreach ($games as $gameName => $stats) {
    if (key_exists("dlc", $stats)) {
        $games[$gameName]['price'] = $games[$gameName]['price'] - ($games[$gameName]['price'] * 0.5);
        $gamesWithDlc[$gameName] = $games[$gameName];
        unset($games[$gameName]);
    } else {
        $games[$gameName]['price'] = $games[$gameName]['price'] - ($games[$gameName]['price'] * 0.2);
    }
}

uksort($gamesWithDlc, function($key1, $key2) use ($gamesWithDlc) {
    return $gamesWithDlc[$key1]['price'] <=> $gamesWithDlc[$key2]['price'];
});
uksort($games, function($key1, $key2) use ($games) {
    return $games[$key2]['price'] <=> $games[$key1]['price'];
});

foreach ($gamesWithDlc as $gameName => $stats) {
    $currDlc = $stats['dlc'];
    $currPrice = number_format($stats['price'], 2, ".", ".");
    echo "$gameName - $currDlc - $currPrice" . PHP_EOL;
}

foreach ($games as $gameName => $stat) {
    $currPrice = number_format($stat['price'], 2, ".", ".");
    echo "$gameName - $currPrice" . PHP_EOL;
}