Php fetch_assoc return缺少行
我从数据库表中读取一些问题,在内部循环中,我使用外键从另一个表中获取可能的答案 显示的答案行应该是5的固定数字,但它总是只返回4行,内部循环中的第一行答案似乎总是丢失 $\u POST['nbr']是问题的数量 $\u POST['type']是问题的类型Php fetch_assoc return缺少行,php,mysql,Php,Mysql,我从数据库表中读取一些问题,在内部循环中,我使用外键从另一个表中获取可能的答案 显示的答案行应该是5的固定数字,但它总是只返回4行,内部循环中的第一行答案似乎总是丢失 $\u POST['nbr']是问题的数量 $\u POST['type']是问题的类型 $row代表问题$row2代表与以下内容相关的建议答案: 这是密码 <?php // session session_start(); ?> <html> <head> <meta c
$row代表问题$row2代表与以下内容相关的建议答案: 这是密码
<?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.'/'.$Score_Finale.'</b></p>');
}
*/
}
// Il FAUT vérifier que le bareme totale de question est < 1 est la bonne réponse tjr = 1
?>
</body>
</html>
主脚本:
if($_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++;
}
$count++;
}
}
由于注释中的代码可读性不强,因此我编写了一些建议,以查找错误作为答案。如果没有帮助,我会删除它 在开发服务器上,而不是在生产服务器上!在web根目录中添加.htaccess文件或编辑现有文件
php_flag display_startup_errors on
php_flag display_errors on
php_flag html_errors on
php_flag log_errors on
php_value error_reporting -1
php_value error_log /path/to/your/webproject/phperror.log
这将显示并记录php中的任何错误
查看生成的HTML页面的源代码并将其发布在此处
在开发服务器上安装。XAMPP已经包含xdebug。使用诸如Netbeans、Eclipse或PhpStorm之类的IDE来利用xdebug的调试特性。您可以逐个语句跟踪代码,观察当前变量状态。一旦设置好,您就不想在没有任何其他行的情况下工作。哪一行有5行?第1行或第2行?$row用于问题$row2用于与$rowCode相关的建议答案,由于缺少示例数据和参数值,因此不可复制。请改进你的问题。您的问题下方有一个编辑链接。请尝试var\u dump$\u POST;并公开结果。请显示未按预期选择的小数据表。我看不到明显的错误。确定$U POST['nbr']为5或更多?
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