Question

我从数据库表中读到了一些问题，在内部循环中，我从另一个表中用外键获取可能的答案。

显示的答案行应该是固定数字5，但它总是只返回4行，内部循环中答案的第一行似乎总是丢失。

$ _ POST [＆＃39; nbr＆＃39;]是问题的数量

$ _ POST [＆＃39; type＆＃39;]是问题的类型

$ row用于问题$ row2用于与

相关的建议答案

这是代码

<?php 
 // session
 session_start();
   ?>
 <html>
 <head>
<meta charset="UTF-8" >
<title>passé un examen</title>

</head>
<body>

<form method = "post" action ="" >
<b>Specialité : </b> 

<select name="sp">
<?php 
require_once("connect_db.php");
$result = $connect->query("Select nom from specialite");
while($row = $result->fetch_assoc()){
echo '<option>'.$row['nom'].'</option>'.PHP_EOL;
}
?>
</select>

<b>choisi le nombre de questions : </b><input type="number" name="nbr"             step="1" />
<b>type de question : </b>

<select name="type">
  <option value="qcm" >QCM</option>
  <option value="qcs">QCS</option>
  <option value="qc2">LES DEUX</option>
</select>

<input type="submit" name="submit" value="générer" />
</form>

<?php
$count=1;
$count2=1;
$type;

if(isset($_POST['submit'])){

if($_POST['nbr'] <= 0)
    die('choisi au moin une question');

$_SESSION['type']=$_POST['type'];
$_SESSION['nbr_qst']=$_POST['nbr'];
echo '<form action="" method="post" >';
//TYPE QCS
if($_POST['type']=="qcs"){

    $result = $connect->query("SELECT * FROM question WHERE specialite =     '".$_POST['sp']."' ORDER BY RAND() LIMIT ".$_POST['nbr']." ");
    if(($result->num_rows == 0) ||($result->num_rows < $_POST['nbr']))
        die('questions dans cette specialité est insuffusant');
    echo '<p><b>Question QCS</b></p>'.PHP_EOL;
    while($row = $result->fetch_assoc()){

        echo 'Question '.$count.' : '.$row['question'].'<br>'.PHP_EOL;

        echo '<input type="hidden" value="'.$row['question'].'"     name="q'.$count.'" ';
        $result2=$connect->query("SELECT * FROM reponses WHERE     id_Q=".$row['id_Q']);
        while($row2 = $result2->fetch_assoc()){

            echo $count2.'- '.$row2['reponse'].'<input type="radio" name="srep'.$count.'" value="'.$row2['iscorrect'].'" /><br>'.PHP_EOL;
            $count2++;
        }
        $count2=1;
        $count++;
    }


}
//Type QCM
if($_POST['type']=="qcm"){
    $result = $connect->query("SELECT * FROM question_qcm WHERE specialite =     '".$_POST['sp']."' ORDER BY RAND() LIMIT ".$_POST['nbr']." ");
    if(($result->num_rows == 0) ||($result->num_rows < $_POST['nbr']))
        die('questions dans cette specialité est insuffusant');

    echo '<p><b>Question QCM</b></p>';
    while($row = $result->fetch_assoc()){

        echo 'Question '.$count.' : '.$row['question'].'<br>'.PHP_EOL;
        // get the question primary key
        echo '<input type="hidden" value="'.$row['id_qcm'].'" name="q'.$count.'" ';
        $result2=$connect->query("SELECT * FROM reponse_qcm WHERE id_qcm=".$row['id_qcm']);
        while($row2 = $result2->fetch_assoc()){
            echo $count2.'- '.$row2['reponse'].'<input type="checkbox" name="mrep'.$count.$count2.'" value="'.$row2['id'].'" /><br>'.PHP_EOL;
            $count2++;
        }
        $count2=1;
        $count++;
    }

}

//Type de deux
if($_POST['type']=="qc2"){
    $nbr=$_POST['nbr']/2;
    if($_POST['nbr']==1)
        die('choisi au moin deux question pour le type <b>LES DEUX</b>'.PHP_EOL);


    $result = $connect->query("SELECT * FROM question WHERE specialite = '".$_POST['sp']."' ORDER BY RAND() LIMIT ".(int)$nbr." ");
    if(($result->num_rows == 0) )
        die('questions QCS dans cette specialité est insuffusant');

    echo '<p><b>Question QCS</b></p>'.PHP_EOL;
    while($row = $result->fetch_assoc()){

        echo 'Question '.$count.' : '.$row['question'].'<br>';
        echo '<input type="hidden" value="'.$row['id_Q'].'" name="sq'.$count.'" '.PHP_EOL;
        $result2=$connect->query("SELECT * FROM reponses WHERE id_Q=".$row['id_Q']);
        while($row2 = $result2->fetch_assoc()){
            echo $count2.'- '.$row2['reponse'].'<input type="radio" name="srep'.$count.'" /><br>'.PHP_EOL;
            $count2++;
        }
        $count2=1;
        $count++;
    }







    $nbr = ($_POST['nbr']/2)+($_POST['nbr']%2);

    $result1 = $connect->query("SELECT * FROM question_qcm WHERE specialite = '".$_POST['sp']."' ORDER BY RAND() LIMIT ".(int)$nbr." ");
    if(($result1->num_rows == 0))
        die('questions QCM dans cette specialité est insuffusant');


    echo '<p><b>Question QCM</b></p>';
    while($row = $result1->fetch_assoc()){

        echo 'Question '.$count.' : '.$row['question'].'<br>'.PHP_EOL;
        echo '<input type="hidden" value="'.$row['id_qcm'].'" name="mq'.$count.'" ';
        $result2=$connect->query("SELECT * FROM reponse_qcm WHERE id_qcm=".$row['id_qcm']);
        while($row2 = $result2->fetch_assoc()){
            echo $count2.'- '.$row2['reponse'].'<input type="radio" name="mrep'.$count.'" /><br>'.PHP_EOL;
            $count2++;
        }
        $count2=1;
        $count++;
    }

}





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





}
?>

<br><br>

</form>










<?php
if(isset($_POST['valider'])){

//IF THERE's NOT a GENERATION YET

//IF ALL Question are answered


    $Score=0;

    //TYPE QCS
    if($_SESSION['type']=="qcs"){
    $Score_Finale = $_SESSION['nbr_qst'];
    for($i=1;$i<=$_SESSION['nbr_qst'];$i++){

    if(isset($_POST['srep'.$i])){

        $Score+=$_POST['srep'.$i];
        }



    }

    die('<p><b>Ton Score est : '.$Score.'/'.$Score_Finale.'</b></p>');  
    }
    /*
    //TYPE QCM (deux boule c tt  nbrquest,5)
if($_SESSION['type']=="qcm"){
    $Score_Finale = $_SESSION['nbr_qst'];
    for($i=1;$i<=$_SESSION['nbr_qst'];$i++){
        for($j=1;$j<=5;$j++){

                    if(isset($_POST['mrep'.$i.$j])){

                        $result = $connect->query("Select * FROM reponse_qcm     where id=".$_POST['mrep'.$i.$j]);
                        $row = $result->fetch_assoc();
                    $Score = $row['bareme'];

                    }


            }



    }


die('<p><b>Ton Score est : '.$Score.'/'.$Score_Finale.'</b></p>');  
}
*/

}


// Il FAUT vérifier que le bareme totale de question est < 1 est la bonne     réponse tjr = 1
?>



</body>
</html>

数据库截图

questions table

responses table

浏览器结果的屏幕截图

output

**过了一会儿，我找到了解决方案**

而不是做两个循环，我确实为第二个循环创建了一个函数并返回每个问题的响应

功能：

function getRepS($id){

require_once("connect_db.php");
global $connect;
$result = $connect->query("SELECT * FROM reponses WHERE id_Q=".$id);
$count=0;
$Send;
while($row = $result->fetch_assoc()){

    $Send[$count] = $row;
    $count++;
  }
  return $Send;
}

主要剧本：

    if($_POST['type']=="qcs"){
        echo '################';
    $result2=$connect->query("SELECT * FROM reponses WHERE id_Q=7");
    while($row2 = $result2->fetch_assoc()){

            echo $row2['reponse'].'<br>';


        }
    echo '################';


    $result = $connect->query("SELECT * FROM question WHERE specialite = '".$_POST['sp']."' ORDER BY RAND() LIMIT ".(int)$_POST['nbr']." ");
    if(($result->num_rows == 0) ||($result->num_rows < $_POST['nbr']))
        die('questions dans cette specialité est insuffusant');
    echo '<p><b>Question QCS</b></p>'.PHP_EOL;
    while($row = $result->fetch_assoc()){

        echo 'Question '.$count.' : '.$row['question'].'<br>'.PHP_EOL;

        echo '<input type="hidden" value="'.$row['question'].'" name="q'.$count.'" ';

        $row2=getRepS($row['id_Q']);

        $count2=0;
        while($count2 != count($row2)){

            echo ($j+1).'- '.$row2[$j]['reponse'].'<input type="radio" name="srep'.$count.'" value="'.$row2[$j]['iscorrect'].'" /><br>'.PHP_EOL;
            $count2++;
        }






        $count++;
    }


}

Answer 1

由于评论中的代码不是很易读，我写了一些建议，以便将错误作为答案。如果它没有用，我会删除它。

在您的开发服务器上（不生产服务器！）在您的Web根目录中添加文件.htaccess（或编辑现有文件）。

php_flag display_startup_errors on
php_flag display_errors on
php_flag html_errors on
php_flag log_errors on
php_value error_reporting -1
php_value error_log  /path/to/your/webproject/phperror.log

这应该显示并记录php中的任何错误。

查看生成的HTML页面的源代码并在此处发布。

在开发服务器上安装xdebug。 XAMPP已经包含xdebug。使用像Netbeans，Eclipse或PhpStorm这样的IDE来利用xdebug的调试功能。您可以通过语句跟踪当前变量状态来逐步跟踪代码。设置完成后，您将不再需要工作。

fetch_assoc返回缺少的行

1 个答案: