猜數字游戲PHP無法使用

Question

我正在嘗試編寫一個PHP游戲，該游戲會在1到100之間引發一個隨機（ $secretNumber ）數字，將其打印到屏幕上，並打印一個帶有按鈕的表單，供用戶選擇“較高”，“較低”或“正確”。 按下按鈕后，外部值會相應更改，並且計算機會在最低和最高值之間產生另一個隨機數。 這一直持續到用戶選擇正確並重置游戲為止。 我正在使用一個會話來確保每次單擊按鈕時都不會重置值。 我的問題是，在$secretNumber $_SESSION鎖定之前， $secretNumber重置兩次。而且$randomGuess在更新之前似乎也沒有鎖定。

關於為什么這樣不起作用的任何建議？

<?php session_start() ?>

<?php
$low = 1;
$high = 100;
//create a function to hold a random number, between 1 and 100  and save it 
//to a session variable.
secretNumber();

function secretNumber(){ //********** secretNumber() **********
 global $randomGuess;
        if(!isset($_SESSION["secretNumber"])){
        $secretNumber = rand(1,100);
        $_SESSION['secretNumber'] = $secretNumber;
    } else {
        $secretNumber = $_SESSION["secretNumber"];
        echo($_SESSION['secretNumber']);
    }

    echo 'Secret number is '.$secretNumber;
    echo '  <br/>  ';
    }                   //********** end secretNumber() ***********

    //create a function to create a random guess as to the value of the 
    //first random number

randomGuess();

function randomGuess() { //********** randomGuess() **********
 global $randomGuess;
 global $low;
 global $high;

if (isset($_SESSION['low'])){
        $low = $_SESSION['low'];
} 
if (isset($_SESSION['high'])){
        $high = $_SESSION['high'];
}
    $randomGuess = round($high-(($high-$low)/2));
    echo 'Random guess is '.$randomGuess;
    echo "<br/>";
    $_SESSION['randomGuess'] = $randomGuess;
    }                   // ********** end randomGuess() **********

//create a function to provide a response as to whether the guess is low, 
//high or correct, and adjust the limits of the random guess accordingly.

checkGuess();

function checkGuess() { // ********** checkGuess() **********
 global $low;
 global $high;
 global $randomGuess;

// form to show a 'high' button, a 'low' button and a 'correct' button
// Correct button needs to reset $_SESSION["secretNumber"], and start 
// process over.

    print <<<HERE
        <div>
                <br/><br/><br/>
                <form method = "post" action = ""  style="width:35%; 
       padding-left:35%">
                    <fieldset>

                        <button type = "submit" value="high" name ="high">Too High</button> <br/><br/>
                        <button type = "submit" value="low" name = "low">Too Low</button> <br/><br/>
                        <button type = "submit" value="correct" name = "correct">Correct</button> <br/><br/>

                    </fieldset>
                </form>
            </div>  
HERE;

    if (isset($_POST['low'])) {
                echo "low <br/>";
                echo "randomGuess = ".$randomGuess. "<br/>";
                unset($_SESSION["low"]);
                $low = $randomGuess;
                $_SESSION['low'] = $low;
                unset($_SESSION["randomNumber"]);
    }
    if (isset($_POST['high'])){
                echo "high <br/>";
                echo "randomGuess = ".$randomGuess. "<br/>";
                unset($_SESSION["high"]);
                $high = $randomGuess;
                $_SESSION['high'] = $high;
                unset($_SESSION["randomNumber"]);
    }
 } //                   ********** end checkGuess() **********

if (isset($_POST['correct'])){
            print <<<HERE
            <h2>Yes I guessed the correct secret number. Your secret is out</h2>
    HERE;
        unset($_SESSION["secretNumber"]);// unset the random number as the guess was correct.
            unset($_SESSION["high"]);
            unset($_SESSION["low"]);
        }//end if

echo "low =".$low."<br/>";
echo "high =".$high." <br/>";

?>

Answer 1

嘗試檢查$secretNumber是否與會話相同。

var_dump($secretNumber);

if($secretNumber != $_SESSION["secretNumber"]) { echo "Restart is here"; }

在執行每個功能之后對其進行測試，然后您可以看到問題所在。