Php 猜谜游戏_Php_Html_Arrays_Forms_Shuffle

Php 猜谜游戏

php html arrays forms

Php 猜谜游戏,php,html,arrays,forms,shuffle,Php,Html,Arrays,Forms,Shuffle,这个游戏的问题是索引它从0开始，当它达到值5时，它给出一个错误，因为很明显数组的最后一个值被索引为4，所以数组中没有索引5 我试图用if语句阻止它，但它导致了其他错误！有解决办法吗通过将$index与数组中的项数进行比较，可以检查$index是否太大： <?php $strArray = array("supermarket", "programming", "development", "apache","university"); $index = isset($_POST[

这个游戏的问题是索引

它从0开始，当它达到值5时，它给出一个错误，因为很明显数组的最后一个值被索引为4，所以数组中没有索引5 我试图用if语句阻止它，但它导致了其他错误！有解决办法吗

通过将$index与数组中的项数进行比较，可以检查$index是否太大：

<?php

$strArray = array("supermarket", "programming", "development", "apache","university");

$index = isset($_POST['index']) ? $_POST['index'] : 0;
$message2 = str_shuffle($strArray[$index]);
if(!isset($_POST['guess'])){
    $message1="<h1>Welcome to the shuffle game!</h1></br>";
    $message2=str_shuffle($strArray[$index]);
}

elseif($_POST['guess'] == $strArray[$index]){   
    $message1="<h1>You guessed right!</h1></br>";
    $index++;
    $message2=str_shuffle($strArray[$index]);
}

elseif($_POST['guess'] != $strArray[$index]){
    $message1="<h1>You guessed wrong!</h1></br>";
}

?>
<!DOCTYPE html>
<html>
<head><title>Guess the word!</title></head>
<body>

<?php echo $message1; echo "<b>Try to guess the shuffled word: </b>" . $message2; ?>
<form action="<?php echo $_SERVER['PHP_SELF']; ?>" method="POST">
<p><label for="guess">Enter your guess:</label>
<input type="text" id="guess" name="guess" /></p>
<input type="hidden" name="index" value="<?php echo $index; ?>">
<button type="submit" name="submit" value="submit">Guess</button>
</form></body></html>

旁注：实际上，您应该在第一次定义$index的开始处进行此检查，同时检查>=0和调用is_numeric。否则，恶意用户可能会发送$_POST['index']，例如100或-1或foo。

在显示游戏表单之前，请检查$index是否已达到数组的长度。如果是这样，则显示一条消息，说明游戏结束，而不是表单

<?php

$strArray = array("supermarket", "programming", "development", "apache","university");

$index = isset($_POST['index']) ? $_POST['index'] : 0;
$message2 = str_shuffle($strArray[$index]);
if(!isset($_POST['guess'])){
    $message1="<h1>Welcome to the shuffle game!</h1></br>";
    $message2=str_shuffle($strArray[$index]);
}

elseif($_POST['guess'] == $strArray[$index]){   
    $message1="<h1>You guessed right!</h1></br>";
    if ($index < count($strArray) - 1) {
        $index++;
    } else {
        $index = 0;
    }
    $message2=str_shuffle($strArray[$index]);
}

elseif($_POST['guess'] != $strArray[$index]){
    $message1="<h1>You guessed wrong!</h1></br>";
}

?>

您可以尝试isset：当达到5时，您的预期行为是什么？如果post索引大于5，则返回false！我希望索引在达到值4thaaan后重置为0，真是太感谢你了！！

<?php

$strArray = array("supermarket", "programming", "development", "apache","university");

$index = isset($_POST['index']) ? $_POST['index'] : 0;
$message2 = str_shuffle($strArray[$index]);
if(!isset($_POST['guess'])){
    $message1="<h1>Welcome to the shuffle game!</h1></br>";
    $message2=str_shuffle($strArray[$index]);
}

elseif($_POST['guess'] == $strArray[$index]){   
    $message1="<h1>You guessed right!</h1></br>";
    if ($index < count($strArray) - 1) {
        $index++;
    } else {
        $index = 0;
    }
    $message2=str_shuffle($strArray[$index]);
}

elseif($_POST['guess'] != $strArray[$index]){
    $message1="<h1>You guessed wrong!</h1></br>";
}

?>

<?php

$strArray = array("supermarket", "programming", "development", "apache","university");

$index = isset($_POST['index']) ? $_POST['index'] : 0;
$message2 = str_shuffle($strArray[$index]);
if(!isset($_POST['guess'])){
    $message1="<h1>Welcome to the shuffle game!</h1></br>";
    $message2=str_shuffle($strArray[$index]);
}

elseif($_POST['guess'] == $strArray[$index]){   
    $message1="<h1>You guessed right!</h1></br>";
    $index++;
    if ($index < count($strArray)) {
        $message2=str_shuffle($strArray[$index]);
    }
}

elseif($_POST['guess'] != $strArray[$index]){
    $message1="<h1>You guessed wrong!</h1></br>";
}

?>
<!DOCTYPE html>
<html>
<head><title>Guess the word!</title></head>
<body>

<?php 
echo $message1; 
if ($index < count($strArray)) {
    ?>
    <b>Try to guess the shuffled word: </b>" <?php echo $message2; ?>
    <form action="<?php echo $_SERVER['PHP_SELF']; ?>" method="POST">
    <p><label for="guess">Enter your guess:</label>
    <input type="text" id="guess" name="guess" /></p>
    <input type="hidden" name="index" value="<?php echo $index; ?>">
    <button type="submit" name="submit" value="submit">Guess</button>
    </form>
    <?php
} else {
    ?>
    <b>Game over!</b>
    <p><a href="<?php echo $_SERVER['PHP_SELF']; ?>">Play again</a></p>
    <?php
}
?>
</body></html>