Php 如何显示测验的正确结果
我正在试着做一个小测验。它很有效,但没有给出正确的结果。对于正确答案,例如答案1变量rans应增加1,但在提交第二个问题后,它会增加,这就是为什么第十个当前答案的值不包括在总正确答案中的原因Php 如何显示测验的正确结果,php,Php,我正在试着做一个小测验。它很有效,但没有给出正确的结果。对于正确答案,例如答案1变量rans应增加1,但在提交第二个问题后,它会增加,这就是为什么第十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=(!i
<?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='" . $rans . "'>";
echo "<input type='submit' name='next' value='next'> ";
echo "<input type='submit' name='submit' value='submit'><br><br>";
echo "</form>";
}
}
?>
好吧,你的代码有点乱
你有随机的重言式(比如$rans=$rans;
),它完全不起作用。如果回答者单击“下一步”,你就分配了$totalquestion
两次。一定要仔细查看并重构此页面
但是你的问题的答案可能是因为你正在检查他们是否在代码底部输入了正确的答案——在你给出结果或下一个问题之后
您已经利用了PHP的脚本功能,而不涉及任何函数,因此它将自上而下地进行评估
我会移动所有东西:将“next”的处理程序移动到顶部,在默认变量赋值下面,然后在下面检查正确答案,然后演示下一个问题,然后是“submit”处理程序
为了可读性和可重用性,我也会将不同的单元分解成函数。例如,生成一个函数来打印指定的问题,生成另一个函数来验证输入正确答案的用户。$Mysql_*由于安全问题而被弃用。将来的用户mysqli或pdo也要使用准备好的语句!这是什么应该怎么做?$rans=$rans;
$rans=$rans是分配rans的前一个值(正确答案)回答错误。@Snowburn除了为自己分配$rans外,它所做的一切都是为自己分配$rans。这是一段完全无用的代码。您还意识到,如果有人执行视图代码,他们可以看到问题的正确答案吗?谢谢Snowburn,我根据您的建议重新排列了代码段,现在它可以正常工作@Snowburn