Question

我正在测试一个有十个问题的测验。除了第二个（填空）和最后一个，所有都是多项选择，这需要用户从六个复选框中选择三个。

这是答案键和评分脚本：

if ($_SERVER['REQUEST_METHOD'] == 'POST') {
 $correct = 0;
 $answers = array(1 => array('A'), 
             2 => array('Mars'), 
             3 => array('C'), 
             4 => array('D'), 
             5 => array('A'), 
             6 => array('C'), 
             7 => 'C', 
             8 => 'C', 
             9 => 'B', 
             10 => array('A','B','C'));
$total = count($answers);

foreach($answers as $num => $answer){
    $qa = $_POST['q'.$num.''];

if(is_array($answer)){
    if(array_diff($qa, $answer) == array()){
        $correct++;
    }
} else if($qa === $answer){
    $correct++;
 }

 $grade= ($correct/count($answers))*100;
 }
}
echo '<div style="background: #ff0;">Score '.$grade.'%</div>';
echo '<br>var_dump: ';
var_dump($_POST);

如果我将所有十个问题都正确，它会显示正确的数组（下方），但我得到的分数为70％而不是100％。如果我把前两个问题弄错了但所有其他问题都是正确的，我会得到50％，而不是80％。

任何人都可以看到我的评分脚本有问题，或者您认为问题出在我的测验代码的其他地方？

var_dump: array(12) { ["q1"]=> array(1) { [0]=> string(1) "A" } ["q2"]=> array(1) { [0]=> string(7) "Mars" } ["q3"]=> array(1) { [0]=> string(1) "C" } ["q4"]=> array(1) { [0]=> string(1) "D" } ["q5"]=> array(1) { [0]=> string(1) "A" } ["q6"]=> array(1) { [0]=> string(1) "C" } ["q7"]=> array(1) { [0]=> string(1) "C" } ["q8"]=> array(1) { [0]=> string(1) "C" } ["q9"]=> array(1) { [0]=> string(1) "B" } ["q10"]=> array(3) { [0]=> string(1) "A" [1]=> string(1) "B" [2]=> string(1) "C" } ["PreviousURL"]=> string(25) "http://g1/test/gw-intro" ["user_token"]=> string(13) "54f3d1ac48555" }

Answer 1

希望这能回答你的问题 - 它在我做过的随机试验中起作用。如果它不能正常工作，请告诉我，并请提供更多详细信息。

<?php
$correct = $answered = 0; //Correct Total.
$answers = array(1 => array('A'), 
         2 => array('Mars'), 
         3 => array('C'), 
         4 => array('D'), 
         5 => array('A'), 
         6 => array('C'), 
         7 => 'C', 
         8 => 'C', 
         9 => 'B', 
         10 => array('A','B','C'));
$_POST = [
    'q1'=>['A'],
    'q2'=>['Mars'],
    'q3'=>['C'],
    'q4'=>['D'],
    'q5'=>['A'],
    'q6'=>['C'],
    'q7'=>'C',
    'q8'=>'C'

]; //I did this to run the algorithm without needing to make up a form.
foreach($answers as $key => $values){
    if(!key_exists('q'.$key, $_POST)) //Key does not exist in the POST data sent by the browser, answer is therefore wrong.
        $answered++; //Increase the "answered" count, but do not increase the correct count 
    else{
        $answer = $_POST['q'.$key];
        if($answer === $values){ 
            //If the answer is exactly equal to the value in the answer array, it is correct.
            //I'm assuming you format the answers as you need.

            $correct++;
            $answered++;
        }else{
            $answered++;
        }
    }

}
echo "Your Score is: {$correct}/{$answered}, or ". (($correct/$answered)*100)."%";

＆GT;

Answer 2

抱歉，这是一个蹩脚的问题。我确认评分脚本正在运行。唯一的问题是，如果你不回答某个特定问题，那就不算错。因此，如果你只回答一个问题并且你做对了，那就是1分之一，或100％，当它应该是10％。

测验评分脚本无法正常工作

2 个答案: