Question

我有一个问题，当我使用jQuery ajax时，php不记得变量。你能帮助我如何让它记住它的变量吗？

我在此邮件的底部附有代码文件。首先，question.php向javascript发送一个问题（通过jQuery ajax）并以html显示。 question.php文件也会将总和放在变量$correctAnswer或$_SESSION[correct_answer]中。然后，用户在html和javascript中输入答案会将答案发送到.check_answer.php（通过jQuery ajax）。之后，check_answer.php文件中的php代码会将用户答案与变量$correct_answer或$_SESSION[correct_answer]进行比较，以查看答案是否正确。

问题是check_answer.php似乎不记得question.php中设置的变量$ correct_answer，因此无法正确检查答案。我尝试使用$_SESSION[correct-answer]，但服务器端（php）仍然不记得$correct_answer或＆amp; SESSION[correct_answer].

中的值

你能告诉我这里我做错了什么以及如何让php记住变量以获得正确的答案？

谢谢你， Noby

的index.php

<html>
    <head>
        <meta charset="UTF-8">
        <title>Ajax-powered Quiz</title>


    </head>
    <body>
        <p> Answer the following question. </p>
        <p id="question_text">Question</p>
        <p id="response_text">Response</p>

        <input id="your_answer" type="textbox">    
        <input id="submit_button" type="button" value="submit">

    <script type="text/javascript" src="js/jquery.min.js"></script>
    <script type="text/javascript" src="js/main.js"></script> 
    </body>
</html>

main.js

$.ajax({
        url:"php/question.php"
}).done(function(data){
    $("#question_text").html(data);
});


function server_response(data) {
    $("#response_text").html(data);
}

function submit_answer() {
    alert("answer submitted!");
    var your_answer;
    your_answer = parseInt( $("#your_answer").val() );

    var send_object = {
        yourAns: your_answer
    };

    //$.get("php/check_answer.php", send_object, server_response);

  $.ajax ({
    url: 'php/check_answer.php',
    type: 'post',
    data: send_object,
    success: server_response
  });
}



$("#submit_button").click(submit_answer);

question.php

<?php
session_start();

$numb1 = 2;
$numb2 = 3;
$_SESSION['correct_answer'] = $numb1 + $numb2;

echo "$numb1 + $numb2 = ?";

?>

check_answer.php

<?php

$your_answer = filter_input(INPUT_POST, "yourAns");
echo "your answer is $your_answer!";

$correct_answer = $_SESSION['correct_answer'];
if ($your_answer == $correct_answer) {
    echo "You are correct!";
} else {
    echo "You are wrong!";
    echo "Correct answer is $correct_answer!";
}



?>

Answer 1

在check_answer.php文件中，首先使用session_start()方法在顶部开始会话。它会工作的。

Answer 2

您没有在check_answer.php开始会话。

所以在session_start()中添加check_answer.php。它会起作用:)）

当我使用jQuery ajax

2 个答案: