Question

我正在尝试进行测验。它正在工作但没有给出正确的结果。在正确答案上，例如答案1变量rans应该增加1，但在提交第2个问题后它会递增，这就是为什么第10个当前答案的值不包括在总正确答案中的原因。

            <?php
      require_once("global.inc.php");?>
     <form name="test" method="post" action="test.php"> 
     <?php 
    $qid=(!isset($_POST['q_id'])) ? 0 : $_POST['q_id'];
    $rans=(!isset($_POST["rans"])) ? 0 : $_POST["rans"]; 
    $totalquestion=(!isset($_POST["totalquestion"])) ? 
            0 : $_POST["totalquestion"];  
    echo $rans;  

    if(isset($_POST["submit"]))
     {
     echo "<table align='center' style='border:1px solid silver' width='80%' 
    bgcolor='green'>"; 
     echo "<tr><td>Total Question Attempt</td><td>",$totalquestion,"</td><tr>"; 
     echo "<tr><td>Correct Answer</td><td>",$rans,"</td></tr>"; 
     echo "<tr><td>Wrong Answer</td><td>",$totalquestion-$rans,"</td></tr>"; 
     echo "<tr><td>Correct Answer Percentage</td> <td>",$rans/$totalquestion*100,"%</td></tr>"; 
     echo "<tr><td>Wrong Answer Percenntage</td><td>",($totalquestion-$rans)/$totalquestion*100,"%</td></tr>"; 
     echo "</table><br><br>"; 
     $query="select * from questions,answers 
             where questions.q_id=answers.q_id";

     echo "<table cellpadding='5px' align='center' style='border:1px 
    solid silver'>"; 
     echo "<tr><th colspan='4' id='heading'>Online Quiz Test 
    Question</td></tr>"; 
     $result=mysql_query($query); 
     while ($row = mysql_fetch_array($result)) { 
     echo "<tr><td>",$row['q_id'],"</td><td colspan='2'>",$row['question'],"</td></tr><tr><td></td>"; 
     echo "<td colspan='2'>A. ",$row['opt1'],"</td>"; 
     echo "<td colspan='2'>B. ",$row['opt2'],"</td></tr>"; 
     echo "<tr><td></td><td colspan='2'>C. ",$row['opt3'],"</td>"; 
     echo "<td colspan='1'>D. ",$row['opt4'],"</td></tr>"; 
     echo "<tr><td colspan='4' align='right' 
    style='color:orange'>Correct option is ",strtoupper($row['correct_ans']),"</td></tr>"; 
     echo "<tr><td colspan='4' align='right' 
    style='color:orange'><hr></td></tr>"; 

     } 
     echo "</table>"; 
     echo "<p align='right'><a href='#' onclick='window.print()'>Print</a></p>"; 
     echo "<div style='visibility:hidden;display:none'>"; 

     } 

     ?>
       <form name="test" method="post" action="test.php"> 
     <?php
       if(!isset($a))
        {   
            $a=0;

        //unset($_SESSION['score']);
        }


        if(isset($_POST['next'])) {
            $a=$_POST['a'];
            $totalquestion=$_POST['totalquestion'];  
            if(isset($_POST['rans']))
            $rans=$_POST['rans'];       

            }

        $sql1="SELECT * FROM questions,answers 
                   where questions.q_id=answers.q_id limit 1 offset $a";
        $result=mysql_query($sql1);
        $num = mysql_num_rows($result);
        echo "<form method='post' action=''>";


        if($result) {
        while ($row = mysql_fetch_array($result))

        {

        $qid = $row["q_id"];

        $questions = $row["question"];

        $opt1 = $row["opt1"];

        $opt2 = $row["opt2"];

        $opt3 = $row["opt3"];

        $opt4 = $row["opt4"];

        $correct = $row["correct_ans"];
        echo $rans;
    ?>


         <p >Q.<?php echo $qid ?> <?php echo $questions;?></p>
 <input type="radio" value="<?php echo $opt1;?>" name="choice"/><?php echo $opt1;?>    <br/>
<input type="radio" value="<?php echo $opt2;?>" name="choice"/><?php echo $opt2;?><br/>
 <input type="radio" value="<?php echo $opt3;?>" name="choice"/><?php echo $opt3;?><br/>
 <input type="radio" value="<?php echo $opt4;?>" name="choice"/><?php echo $opt4;?><br/>
 <input type="hidden" value="$answer" name="rightanswer[$qid]"/>


     <?php   

         $b=$a+1;   


        $sql2="SELECT * FROM questions where q_id=$qid-1 ";
        $result2=mysql_query($sql2);
        while ($row2 = mysql_fetch_array($result2)) {
        $ans=$row2['correct_ans'];

        }    


        if(isset($_POST['choice'])) {
        if($ans==$_POST['choice']){
        //echo "<input type='hidden' name='rans' value='".($rans+1). "'>"; 
        $rans=$rans+1; 
        } 
        else {
        //echo "<input type='hidden' name='rans' value='" . $rans . "'>"; 
         $rans=$rans;
        }
        }

        //$query="select correct_ans from questions where q_id='$qid'"; 
         //$result=mysql_query($query); 
        //while ($row = mysql_fetch_array($result)) {
        //echo $row['correct_ans']; 

    echo "<input type='hidden' value='$b' name='a'>";
    echo "<input type='hidden' value='count' name='count'>";
    echo "<input type='hidden' name=qid value='$qid'>";

   echo "<input type='hidden' name='totalquestion' value='".$totalquestion+1)."'>";

        echo "<input type='hidden' name='rans' value='" . $rans . "'>"; 

        echo "<input type='submit' name='next' value='next'> ";

        echo "<input type='submit' name='submit' value='submit'><br><br>";

     echo "</form>";
    }

    }
    ?>

Answer 1

好的，你的代码有点乱。

你有随机的重言式（比如$rans=$rans;什么都不做。如果回答者点击“下一步”你会分配$totalquestion两次。绝对要好好看看并重构这个页面。

但问题的答案可能是因为您在查看结果或下一个问题后，正在检查他们是否在代码底部输入了正确的答案。

您已经使用了PHP的脚本功能，而没有触及任何功能，因此它将从上到下进行评估。

我会移动一切：将“next”的处理程序移动到顶部，在默认变量赋值下面，然后检查下面的正确答案，然后执行下一个问题的演示，然后“提交” “处理程序。

我还将不同的单元拆分为可读性和可重用性的功能。例如，创建一个函数来打印出指定的问题，再创建一个函数来验证在正确答案中输入的用户。

如何显示测验的正确结果

1 个答案: