<html>
<head>
    <title>Guess Game</title>
    <link href="//yorktown.cbe.wwu.edu/sandvig/mis314/assignments/style.css" rel="stylesheet" type="text/css">
</head>
<body>
    <div class="pageContainer centerText">

        <h2>Guess Game</h2>
        <hr />

        <form>
            <p>Please guess a number:</p>
            <input type="text" name="guess" autofocus>
            <input type="submit" value="Submit Name">
        </form>
        <?php
        //Retrieve name from querystring. Check that parameter
        //is in querystring or may get "Undefined index" error
        if (isset($_GET['guess']) && is_numeric($_GET['guess'])){
            $guess = $_GET['guess'];
            if ($guess <= 4) {
                echo "Your guess of $guess was very low.";
            } elseif ($guess > 4 && $guess < 7) {
                echo "Your guess of $guess was low.";
            } elseif ($guess == 7) {
                echo "Your guess of $guess was correct!";
            } elseif ($guess > 7 && $guess < 10) {
                echo "Your guess of $guess was high.";
            } elseif ($guess >= 10) {
                echo "Your guess of $guess was very high.";
            }
        } else {
            if (isset($_GET['guess'])) {
                echo "Please enter a valid number.";
            }
        }
        ?>
    </div>
</body>
</html>
