Question

我正在制作一个测验应用程序，我在PHP中有一个多项选择题。用户得到一个问题和多个选择来选择答案。他们得到的选项每次都会刷新（shuffle / rand func）。因此，当用户选中该复选框并使用正确的答案验证选项并对其进行评分。例如。如果有3个正确的选择并且用户选择所有3个正确他们获得5分并且部分正确他们得到3分并且对于错误选择他们得到0.请在下面找到我的代码。谢谢你的时间，

<!DOCTYPE html>
<html lang="en">
<head>
<title>Bootstrap Example</title>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1">
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/css/bootstrap.min.css">
<link rel="stylesheet" href="css/style.css">
<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/js/bootstrap.min.js"></script>
</head>
<body>
<nav class="navbar navbar-inverse"></nav>
<div class="container-fluid text-center">
  <div class="row content">
    <div class="col-sm-2 sidenav">
      <p>&nbsp;</p>
    </div>
    <div class="col-sm-8 text-left">
      <h1>Question 1</h1>
      <p>Multiple choice question</p>
      <div class="row"> </div>
      <hr>
      <p>Which of the following cities are in India?</p>
      <?php
$a=array("London","Mumbai","Berlin","Tokyo","Delhi", "Patna" , "Lahore");
$random_keys=array_rand($a,7);
shuffle($a);?>
      <div class="form-check">
        <form class="form-inline" action="#" method="post">
          <div class="checkbox">
            <label class="form-check-label">
              <input class="form-check-input" type="checkbox" name="check_list[]"  value="<?php echo $a[$random_keys[0]]?>">
              <?php echo $a[$random_keys[0]]."<br>";?>
              <input class="form-check-input" type="checkbox" name="check_list[]"  value="<?php echo $a[$random_keys[1]]?>">
              <?php echo $a[$random_keys[1]]."<br>";?>
              <input class="form-check-input" type="checkbox" name="check_list[]"  value="<?php echo $a[$random_keys[2]]?>">
              <?php echo $a[$random_keys[2]]."<br>";?>
              <input class="form-check-input" type="checkbox" name="check_list[]"  value="<?php echo $a[$random_keys[3]]?>">
              <?php echo $a[$random_keys[3]]."<br>";?>
              <input class="form-check-input" type="checkbox" name="check_list[]"  value="<?php echo $a[$random_keys[4]]?>">
              <?php echo $a[$random_keys[4]]."<br>";?>
              <input class="form-check-input" type="checkbox" name="check_list[]"  value="<?php echo $a[$random_keys[5]]?>">
              <?php echo $a[$random_keys[5]]."<br>";?>
              <input class="form-check-input" type="checkbox" name="check_list[]"  value="<?php echo $a[$random_keys[6]]?>">
              <?php echo $a[$random_keys[6]]."<br>";?> </label>
          </div>
          <div class="form-group">
            <button type="submit" class="btn btn-default" name="submit">Submit</button>
          </div>
        </form>
      <?php
      $totalscore = 0;
            if(isset($_POST["submit"])){

            if (!empty($_POST["check_list"])){
            echo "<p>  You Selected: </p>";

            foreach ($_POST["check_list"] as $answers)


                echo "<p>".$answers ."</p>";

            }

            else{

            echo "Please make atleast one selection.";  
            }
            }


?>


      </div>
    </div>
    <br>
    <br>
  </div>
</div>
</div>
<footer class="container-fluid text-center">
  <p>SM (c) 2018</p>
</footer>
</body>
</html>

Answer 1

As juakali92 said you could use two arrays. What you could do is to make another array which contains right answers. Then compare array containing user answers to correct answers array with array_diff() function and find count of wrong answers. Use count() to get count of right answers and max count of right answers. Then compare/do what ever you want to with that data.

Here's an example:

<?php

$totalscore = 0;

//  All answers
$a = array("london", "mumbai", "berlin", "tokyo", "delhi", "patna", "lahore");
$rnd = array_rand($a, 7);
shuffle($a);

//  Correct answers for same questions
$c = array("mumbai", "delhi", "patna");

//  Check answer
if (isSet($_POST['submit'])) {

    $user_answerArr = $_POST['check_list'];

    //  Get count of wrong answers
    $wrongCount = count(array_diff($c, $user_answerArr));

    //  Max points for right answers
    $maxPoints = count($c);

    //  For this example each right answer gives 1 point
    $totalscore += $maxPoints - $wrongCount;

    echo "Score: " . $totalscore;
}

?>

<form method="post">
    <input type="checkbox" name="check_list[]" value="<?php echo $a[$rnd[0]]; ?>"/> <?php echo $a[$rnd[0]] ?> <br>
    <input type="checkbox" name="check_list[]" value="<?php echo $a[$rnd[1]]; ?>"/> <?php echo $a[$rnd[1]] ?> <br>
    <input type="checkbox" name="check_list[]" value="<?php echo $a[$rnd[2]]; ?>"/> <?php echo $a[$rnd[2]] ?> <br>
    <input type="checkbox" name="check_list[]" value="<?php echo $a[$rnd[3]]; ?>"/> <?php echo $a[$rnd[3]] ?> <br>
    <input type="checkbox" name="check_list[]" value="<?php echo $a[$rnd[4]]; ?>"/> <?php echo $a[$rnd[4]] ?> <br>
    <input type="checkbox" name="check_list[]" value="<?php echo $a[$rnd[5]]; ?>"/> <?php echo $a[$rnd[5]] ?> <br>
    <input type="checkbox" name="check_list[]" value="<?php echo $a[$rnd[6]]; ?>"/> <?php echo $a[$rnd[6]] ?> <br>
    <button type="submit" name="submit">Submit</button>
</form>

PHP：如何检查复选框的值并与数组进行比较？

1 个答案: