Question

为此，我被困在两个部分。我需要一个放弃链接，显示当前游戏生成的数字。还包括一个“重新开始”链接，用于删除用户会话并使用标题（“location：URL”）功能导航到主页面。这是我到目前为止的游戏代码

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>Guessing Game</title>
</head>
<body>
<center><form "action="game.php" method="POST">
Guess a number 1-100:<input type="text" name="userGuess"/>
<input type="submit" value="Guess"/>
</form>
</body>
</html>

<?php
session_start();

$_SESSION['randNum'] = isset($_SESSION['randNum']) ? $_SESSION['randNum'] : rand(0, 100);
$_SESSION['guesses'] = isset($_SESSION['guesses']) ? $_SESSION['guesses'] : 0;

$randNum = $_SESSION['randNum'];
$userGuess = filter_input(INPUT_POST, "userGuess");


if (isset($randNum)) {
    if ($userGuess<$randNum) {
            echo "<center>You guessed too low!</center>";
            $_SESSION['guesses']++;
            echo $_SESSION['guesses'];
        }
    if ($userGuess>$randNum) {
            echo "<center>You guessed too high!</center>";
            $_SESSION['guesses']++;
            echo $_SESSION['guesses'];
        }
    if ($userGuess==$randNum) {
            echo "<center>Congratulations You're right!!!</center>";
                         unset($_SESSION["randNum"], $_SESSION['guesses']);
    }
    if ($userGuess>100 || $userGuess<0) {
            echo "<center>Please enter a number betweeen 1 and 100!</center>";
    }
}
else {
    echo "Please enter a number between 1 and 100";
}
?>

Answer 1

有一些调整，但基本上只是在表单上添加了几个按钮，在服务器端添加了一些字段处理：

<?php
session_start();

function resetGame() {
    unset($_SESSION["randNum"], $_SESSION['guesses']);
}
function restart() {
    header("location: game.php");
}

$_SESSION['randNum'] = isset($_SESSION['randNum']) ? $_SESSION['randNum'] : rand(0, 100);
$_SESSION['guesses'] = isset($_SESSION['guesses']) ? $_SESSION['guesses'] : 0;
$giveUp = isset($_POST['give-up']);
$solution = isset($_POST['solution']);

$randNum = $_SESSION['randNum'];
$userGuess = filter_input(INPUT_POST, "userGuess");

if ($giveUp) {
    resetGame();
    restart();
} else if ($solution) {
   echo "The solution was ". $randNum ."!!";
   resetGame();
} else if (isset($randNum) && !is_null($userGuess)) {
    if ($userGuess<$randNum) {
        echo "<center>You guessed too low!</center>";
        $_SESSION['guesses']++;
        echo $_SESSION['guesses'];
    }      
    if ($userGuess>$randNum) {
        echo "<center>You guessed too high!</center>";
        $_SESSION['guesses']++;
        echo $_SESSION['guesses'];
    }
    if ($userGuess==$randNum) {
        echo "<center>Congratulations You're right!!!</center>";
        resetGame();
    }
    if ($userGuess>100 || $userGuess<0) {
        echo "<center>Please enter a number betweeen 1 and 100!</center>";
    }
} else {
    echo "Please enter a number between 1 and 100";
}
?>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>Guessing Game</title>
</head>
<body>
<center><form "action="game.php" method="POST">
Guess a number 1-100:<input type="text" name="userGuess"/>
<input type="submit" value="Guess"/>
<input type="submit" id="give-up" name="give-up" value="Give up"/>
<input type="submit" id="solution" name="solution" value="Show Solution"/>
</form>
</body>
</html>

Answer 2

这是带有一些调整/更正的代码：

<form "action="game.php">至<form action="game.php">
已关闭<center>代码。
由于存在标题功能，PHP必须先发送/打印出任何内容。
消息应显示在<body>标记中。
$userGuess的截止值应小于1，而不是0。
更改了if/else语句的结构以减少混乱。

将<input type="text">更改为<input type="number">。

<?php

session_start();

$_SESSION['randNum'] = isset($_SESSION['randNum']) ? $_SESSION['randNum'] : rand(0, 100);
$_SESSION['guesses'] = isset($_SESSION['guesses']) ? $_SESSION['guesses'] : 0;

$randNum = $_SESSION['randNum'];

if (isset($_POST['userGuess'])) {

    $userGuess = $_POST['userGuess'];

    if ($userGuess > 100 || $userGuess < 1) {

        $message = "Please enter a number betweeen 1 and 100!";

    } else {

        if ($userGuess < $randNum) {

                $message = "You guessed too low!";
                $count = $_SESSION['guesses'];
                $_SESSION['guesses']++;

            } elseif ($userGuess>$randNum) {

                $message = "You guessed too high!";
                $count = $_SESSION['guesses'];
                $_SESSION['guesses']++;

            } else {

                $message = "Congratulations You're right!!!";
                session_unset();

        }

    }

}

if (isset($_GET['giveup'])) {

    $message = "The answer was " . $randNum . ". I picked a new number to play again.";
    $_SESSION['randNum'] = rand(0, 100);
    $_SESSION['guesses'] = 0;

} else if (isset($_GET['restart'])) {

    session_unset();
    header("location: game.php");
    exit();

}

?>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">

<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>Guessing Game</title>
</head>

<body>
<center>

<?php

echo (isset($message) ? ($message . '<br />') : false) . (isset($count) ? ($count . '<br />') : false);

?>

<form action="game.php" method="POST">
Guess a number 1-100:
<input type="number" name="userGuess" />
<input type="submit" value="Guess" />
</form>

<a href="game.php?giveup">Give up</a>
<a href="game.php?restart">Start over</a>

</center>
</body>

</html>

PHP放弃链接和显示编号链接

2 个答案: