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我正在创建一个 PHP/MSQL 应用程序，它基本上是一个在线测验，用户将开始测验，内部为一个实例随机从 db-table 检索 30 个问题并存储在会话中。我的数据库表有qid、question、op1、op2、op3、op4、ans、category作为列（因为每个问题都应该有 4 个选项和一个答案）。我想检索存储在特定类别表中的所有（例如 30 个）问题，并将它们保存在会话变量中作为 2/3 维关联数组，使用一些循环说 while()/for() 等。

我写的脚本是，

session_start();
require 'connection.php';
$sql = "SELECT * FROM questions WHERE category='$category'";
$result = mysql_query($sql) or die(mysql_error());
$found=mysql_num_rows($result) or die(mysql_error());
if ($found!=0) {
    $i="1";
    $sql= "SELECT * FROM questions WHERE category='$category'";
    $result = mysql_query($sql) or die(mysql_error());
    while ($que= mysql_fetch_assoc($result) && $i<=$found) {
        $_SESSION["$i"]= array(
                                "question"=>$que['question'],
                                "op1"=>$que['op1'],
                                "op2"=>$que['op2'],
                                "op3"=>$que['op3'],
                                "op4"=>$que['op4'],
                                "ans"=>$que['ans']
                                );
                  $i++;
                 }
        echo $_SESSION["$i"]; // echo-ing some session variable
}
mysql_close($dbc);

我之前也使用下面给出的脚本来实现相同的目标，但没有成功-

session_start();
    require 'connection.php';
    $sql = "SELECT * FROM questions WHERE category='$category'";
    $result = mysql_query($sql) or die(mysql_error());
    $found=mysql_num_rows($result) or die(mysql_error());
    if ($found!=0) {
        $i="1";
        $result1 = mysql_query($sql) or die(mysql_error());
        $_SESSION['que'][][]=array();
        while ($que= mysql_fetch_assoc($result1) && $i<=$found) {
                $_SESSION['que'][$i]['question']=$que['question'];
                $_SESSION['que'][$i]['op1']=$que['op1'];
                $_SESSION['que'][$i]['op2']=$que['op2'];
                $_SESSION['que'][$i]['op3']=$que['op3'];
                $_SESSION['que'][$i]['op4']=$que['op4'];
                $_SESSION['que'][$i]['ans']=$que['ans'];
            $i++;
            }
            }
    mysql_close($dbc);

最后我可以使用下面的代码来做到这一点 -

session_start();
        require 'connection.php';
        $sql = "SELECT * FROM questions WHERE category='$category'";
        $result = mysql_query($sql) or die(mysql_error());
        $found=mysql_num_rows($result) or die(mysql_error());
        if ($found!=0) {
            $i="1";
            $result1 = mysql_query($sql) or die(mysql_error());
            while ($que= mysql_fetch_assoc($result1) && $i<=$found) {
                    $str="que".$i;
                    $_SESSION[$str]['qno']=$i;
                    $_SESSION[$str]['question']=$que['question'];
                    $_SESSION[$str]['op1']=$que['op1'];
                    $_SESSION[$str]['op2']=$que['op2'];
                    $_SESSION[$str]['op3']=$que['op3'];
                    $_SESSION[$str]['op4']=$que['op4'];
                    $_SESSION[$str]['ans']=$que['ans'];
                    $_SESSION[$str]['opt']="0";
                $i++;
                }
                }
        mysql_close($dbc);
4

1 回答 1

1

给这个试试。

require 'connection.php';
session_start();
$sql = "SELECT * FROM questions WHERE category='$category'";
$result = mysql_query($sql) or die(mysql_error());
$found=mysql_num_rows($result) or die(mysql_error());
if ($found!=0) {
$i=1;
$sql= "SELECT * FROM questions WHERE category='$category'";
$result = mysql_query($sql) or die(mysql_error());
while ($que= mysql_fetch_assoc($result) && $i<=$found) {
    $_SESSION[$i]= array(
                            "question"=>$que['question'],
                            "op1"=>$que['op1'],
                            "op2"=>$que['op2'],
                            "op3"=>$que['op3'],
                            "op4"=>$que['op4'],
                            "ans"=>$que['ans']
                            );
    }
    print_r($_SESSION[$i]);
    $i++;
}
mysql_close($dbc);
于 2013-04-06T04:15:20.423 回答