Profile BG Controller

<?PHP

    // Get current time -- just the hour.
    date_default_timezone_set('America/New_York');
    $currentHour = date('H');

    // Default state is night time.
    // This code generates the "snow" state.

    $isSnowNew = rand(0,1);
    if ($isSnowNew) {$farBack = "https://i.imgur.com/PlmL3cQ.jpg";}
    else {$farBack = "https://i.imgur.com/3W5Ujmx.png";}

    $snowFile = fopen("issnow.txt", "r");
    $isSnow = fread($snowFile, filesize("issnow.txt"));
    fclose($snowFile);

    if ($isSnow) {
        $snow1 = "https://i.imgur.com/K9gJQyr.png";
        $snow2 = "https://i.imgur.com/4g2qq6a.png";
        $snow3 = "https://i.imgur.com/82niRaZ.png";
        $mainBackground = "https://i.imgur.com/qprrF9Q.png";
        $liteBackground = "https://i.imgur.com/TVccBzx.png";
    }
    else {
        $snow1 = "trans.png";
        $snow2 = "trans.png";
        $snow3 = "trans.png";
        $mainBackground = "https://i.imgur.com/Ypl6jxI.png";
        $liteBackground = "https://i.imgur.com/k1sxO3E.png";
    }

    // Set other states based on current time.

    /*
    if ($currentHour >= 6 && $currentHour < 7) {
        $mainBackground = "MorningBase.png";
        $liteBackground = "MorningLite.png";
    }

    if ($currentHour >= 7 && $currentHour < 16) {
        $mainBackground = "DaylightBase.png";
        $liteBackground = "DaylightLite.png";
    }

    if ($currentHour >= 16 && $currentHour < 17) {
        $mainBackground = "EveningBase.png";
        $liteBackground = "EveningLite.png";
    }
    */

    // Get which image the client wants.
    $imageReq = $_SERVER["QUERY_STRING"];

    switch ($imageReq) {
        case "far" :

            // This is an extremely fragile method for randomizing the snow state.
            $snowFile = fopen("issnow.txt", "w");
            $isSnow = fwrite($snowFile, $isSnowNew);
            fclose($snowFile);

            // Resume sending file.
            header("Location: " . $farBack);
            exit;

        case "base" :
            header("Location: " . $mainBackground);
            exit;
        case "lite" :
            header("Location: " . $liteBackground);
            exit;
        case "snow1" :
            header("Location: " . $snow1);
            exit;
        case "snow2" :
            header("Location: " . $snow2);
            exit;
        case "snow3" :
            header("Location: " . $snow3);
            exit;

    }

?>