Question

我是php web app dev的新手。我正在设计一个在线资质测试。但我遇到了一些我无法继续前进的问题。这是

当我点击下一个问题的导航
如果未回答问题并单击下一个按钮，则会弹出一个错误消息。我对ajax和jquery知之甚少，但相信他们可以用得很好。请以任何方式帮助我实现我的目标。

以下是我的代码：

//test.php

<?php
session_start();

// th value of q is given as 1 from the start quiz button of the users home page
if (isset($_GET['q'])) {
$number = (int)$_GET['q'];
}else{
header('Location : index.php');
}
if(!isset($_SESSION['user_session']))
{

    header("Location: ../login.html");
}
//connection to the db
include_once '../dbconfig.php';

$stmt = $db_con->prepare("SELECT * FROM tbl_admin WHERE aid=:uid");
$stmt->execute(array(":uid"=>$_SESSION['user_session']));
$row=$stmt->fetch(PDO::FETCH_ASSOC);

$qr = $db_con->prepare("SELECT * FROM questions ");
$qr->execute();

$count = $qr->rowCount();
$qrow=$qr->fetch(PDO::FETCH_ASSOC);

$qst = $db_con->prepare("SELECT * FROM questions where quesNo='$number' ");
$qst->execute();
$qstrow=$qst->fetch(PDO::FETCH_ASSOC);



?>

<body>
<header id="header">
  <nav class="navbar navbar-default navbar-fixed-top">
      <div class="container">
        <div class="navbar-header">
          <button type="button" class="navbar-toggle collapsed" data-toggle="collapse" data-target="#navbar" aria-expanded="false" aria-controls="navbar">
            <span class="sr-only">Toggle navigation</span>
            <span class="icon-bar"></span>
            <span class="icon-bar"></span>
            <span class="icon-bar"></span>
          </button>
          <a class="navbar-brand" href="#"><div id="hms">00:05:00</div></a>
        </div>
        <div id="navbar" class="navbar-collapse collapse">
             </header>        
            <div class="item active">


<?php 
//Code to process score(saved is session variable) and move to the next question
                    if($_SERVER['REQUEST_METHOD'] == 'POST'){
                        $ans=$_POST['ans'];
                        $number=$_POST['number'];
                        $next = $number+1;

                    if (!isset($_SESSION['score'])){
                            $_SESSION['score'] = '0';
                    }
$qrs = $db_con->prepare("SELECT * FROM questions ");
$qrs->execute();

$counts = $qrs->rowCount();

$sqlans= "SELECT * FROM answers where quesNo='$number' and right_ans='1'";  
    foreach ($db_con->query($sqlans) as $rowsans) {
        if($ans==$rowsans['ans_id']){
            $_SESSION['score']++;
        }

        if($number==$count){
            header('location:final.php');
            exit();
        }else{
            header('location:test.php?q='.$next);
        }

    }
                }
            ?>
                     <div class="containerx" style="height:530px;">
                <div class="image" style="width:100%">
                     <div class="main">

                            <hl> Question <?php echo $number ?> of <?php echo $count; ?></hl>
                                <div class="test">
                                    <form method="post" action="">
                                        <table>
                                            <tr>
                                                <td coLspan=”2”>
                                            <h3>Que <?php echo $qstrow['quesNo']; ?>: <?php echo $qstrow['ques']; ?></h3>
                                            </td>
                                            </tr>
                                        <?php                       
            $sqla= "SELECT * FROM answers where quesNo='$number'";


                foreach ($db_con->query($sqla) as $rowsa) {
                                 ?>
                            <tr>
                                                <td>
            <input type="radio" name="ans" value=" <?php  echo $rowsa['ans_id']; ?>"/> <?php  echo $rowsa['ans']; ?>
                                                </td>
                                            </tr>
                                            <?php } ?>
                                            <tr>
                                            <td>
                     <input type="submit" id="btn_next" name="submit" value="Next Question"/>
                <input type="hidden" name="number" value="<?php echo $number ?>"/>
                        </td>
                                            </tr>

                                            </table>

                            <!--<div class="caption page-carousel pull-left">-->


                            </div>   

                              <div class="site-full-width darkbluecolor">
                                <div class="container">


              </div>
            </div>
        </div>  

</body>
</html>

    <script>
$(document).ready(function(){
    function count(){
            var startTime = document.getElementById('hms').innerHTML;
            var pieces= startTime.split(":");

            var time = new Date();
            time.setHours(pieces[0]);
           console.log( time.setMinutes(pieces[1]));
            time.setSeconds(pieces[2]);


             console.log( time.setMinutes(pieces[1]));

            var timedif = new Date(time.valueOf() - 1000);
            var newTime=timedif.toTimeString().split(" ")[0];

            document.getElementById('hms').innerHTML=newTime;


           if(newTime==="00:00:00"){
                clearTimeout(time_out);
                $('#btn_next').css('display',' none');
                alert("Sorry Your time is over");

            }  
            time_out= setTimeout(count,1000);



        }
        count();

    }); 



    </script>

在线资质测试中的计时器和导航

0 个答案: