stungeye/index.php

## index.php
<?php
    require('number_game_functions.php');

    $message_for_user = "I've picked a random number between " .
                        RANDOM_NUMBER_MINIMUM . " and " .
                        RANDOM_NUMBER_MAXIMUM . ". Can you guess it?";

    $user_has_guessed_correctly = user_guessed_correctly();

    if (user_submitted_a_guess()) {
        increase_the_user_guess_count();

        if ($user_has_guessed_correctly) {
            $message_for_user = "You got it! It took you " . user_guess_count() . " attempts. Guess again?";
        } else if (user_has_guessed_too_high()) {
            $message_for_user = "Sorry, guess again but lower.";
        } else if (user_has_guessed_too_low()) {
            $message_for_user = "Sorry, guess again but higher.";
        }
    }

    if (secret_number_has_not_yet_been_set() || user_has_requested_a_reset() || $user_has_guessed_correctly) {
        reset_secret_number();
        reset_user_guess_count();
    }

?>
<!DOCTYPE html>
<html>
<head>
    <title>Number Guessing Game</title>
</head>
<body>
    <h1>Guessing Game</h1>
    <p><?= $message_for_user ?></p>

    <form method="post">
        <label for="user_guess">Your Guess</label>
        <input id="user_guess" name="user_guess">
        <input type="submit" name="guess" value="Guess">
        <input type="submit" name="reset" value="Reset">
    </form>

    <!-- Uncomment This When Testing:
        <p><strong>Secret Number:</strong> <?= secret_number() ?></p>
    -->
</body>
</html>

## number_game_functions.php
<?php
    session_start();

    define("RANDOM_NUMBER_MAXIMUM", 100);
    define("RANDOM_NUMBER_MINIMUM", 1);

    function user_submitted_a_guess() {
        return isset($_POST['guess']);
    }

    function user_guessed_correctly() {
        return user_guess() == secret_number();
    }

    function user_has_guessed_too_high() {
        return user_guess() > secret_number();
    }

    function user_has_guessed_too_low() {
        return user_guess() < secret_number();
    }

    function user_has_requested_a_reset() {
        return isset($_POST['reset']);
    }

    // conditional_fetch prevents errors for unset keys.
    function conditional_fetch($hash, $key) {
        if (isset($hash[$key])) {
            return $hash[$key];
        } else {
            return false;
        }
    }

    function user_guess() {
        return conditional_fetch($_POST, 'user_guess');
    }

    function secret_number() {
        return conditional_fetch($_SESSION, 'secret_number');
    }

    function secret_number_has_not_yet_been_set() {
        return !isset($_SESSION['secret_number']);
    }

    function reset_secret_number() {
        $_SESSION['secret_number'] = rand(RANDOM_NUMBER_MINIMUM, RANDOM_NUMBER_MAXIMUM);
    }

    function reset_user_guess_count() {
        $_SESSION['guess_count'] = 0;
    }

    function increase_the_user_guess_count() {
        $_SESSION['guess_count']++;
    }

    function user_guess_count() {
        return conditional_fetch($_SESSION, 'guess_count');
    }
?>
	<?php
	require('number_game_functions.php');

	$message_for_user = "I've picked a random number between " .
	RANDOM_NUMBER_MINIMUM . " and " .
	RANDOM_NUMBER_MAXIMUM . ". Can you guess it?";

	$user_has_guessed_correctly = user_guessed_correctly();

	if (user_submitted_a_guess()) {
	increase_the_user_guess_count();

	if ($user_has_guessed_correctly) {
	$message_for_user = "You got it! It took you " . user_guess_count() . " attempts. Guess again?";
	} else if (user_has_guessed_too_high()) {
	$message_for_user = "Sorry, guess again but lower.";
	} else if (user_has_guessed_too_low()) {
	$message_for_user = "Sorry, guess again but higher.";
	}
	}

	if (secret_number_has_not_yet_been_set() \|\| user_has_requested_a_reset() \|\| $user_has_guessed_correctly) {
	reset_secret_number();
	reset_user_guess_count();
	}

	?>
	<!DOCTYPE html>
	<html>
	<head>
	<title>Number Guessing Game</title>
	</head>
	<body>
	<h1>Guessing Game</h1>
	<p><?= $message_for_user ?></p>

	<form method="post">
	<label for="user_guess">Your Guess</label>
	<input id="user_guess" name="user_guess">
	<input type="submit" name="guess" value="Guess">
	<input type="submit" name="reset" value="Reset">
	</form>

	<!-- Uncomment This When Testing:
	<p><strong>Secret Number:</strong> <?= secret_number() ?></p>
	-->
	</body>
	</html>
	<?php
	session_start();

	define("RANDOM_NUMBER_MAXIMUM", 100);
	define("RANDOM_NUMBER_MINIMUM", 1);

	function user_submitted_a_guess() {
	return isset($_POST['guess']);
	}

	function user_guessed_correctly() {
	return user_guess() == secret_number();
	}

	function user_has_guessed_too_high() {
	return user_guess() > secret_number();
	}

	function user_has_guessed_too_low() {
	return user_guess() < secret_number();
	}

	function user_has_requested_a_reset() {
	return isset($_POST['reset']);
	}

	// conditional_fetch prevents errors for unset keys.
	function conditional_fetch($hash, $key) {
	if (isset($hash[$key])) {
	return $hash[$key];
	} else {
	return false;
	}
	}

	function user_guess() {
	return conditional_fetch($_POST, 'user_guess');
	}

	function secret_number() {
	return conditional_fetch($_SESSION, 'secret_number');
	}

	function secret_number_has_not_yet_been_set() {
	return !isset($_SESSION['secret_number']);
	}

	function reset_secret_number() {
	$_SESSION['secret_number'] = rand(RANDOM_NUMBER_MINIMUM, RANDOM_NUMBER_MAXIMUM);
	}

	function reset_user_guess_count() {
	$_SESSION['guess_count'] = 0;
	}

	function increase_the_user_guess_count() {
	$_SESSION['guess_count']++;
	}

	function user_guess_count() {
	return conditional_fetch($_SESSION, 'guess_count');
	}
	?>