PHP get the values from input forms within a while loop

Question

Hello i have a PHP code where i echo form inputs in a while loop. the logic of my code is that i select the question from the table then while it fetches the rows, every time it will echo out a form for a quiz of multiple choice question. so now if there are 20 questions in the table my code will echo 20 forms with questions . now when i press the submit button, i want to get the values of each selected radio button from each form and check with the answer column of my table. here is my code:

<?php
include 'connection.php'; 

$query = "SELECT question,type,option1,option2,option3,option4,option5,option6,answer FROM question WHERE exam_id = '$exam_id'";
$result = mysqli_query($connection, $query);

while($row=mysqli_fetch_assoc($result))
{

    if ($row['type'] == "mcq") {
        echo '
      <form class="form-horizontal" role="form" method="POST" action="">
          <div class="form-group">

            <div class="col-sm-10">
            <p>'. $row["question"] . ' </p>

            </div>
          </div>
            <div id="form-label">
            <p class="alignleft"><b>Answer:</b></p>

              <div style="clear: both;"></div>
          </div>

          <!-- Text input-->
          <div class="form-group">
            <div class="col-md-2">
            A.  <input type="radio" placeholder="" name="answer" value = "a" id="" required> ' . $row["option1"].
           ' </div>

          </div>
          <!-- Text input-->
          <div class="form-group">
            <div class="col-md-2">
             B. <input type="radio" placeholder="" name="answer" value= "b" id=""> ' . $row["option2"].
            '</div>

          </div> 

           <!-- Text input-->
          <div class="form-group">
            <div class="col-md-2">
              C. <input type="radio" placeholder="" name="answer" value= "c" id=""> ' . $row["option3"].'
            </div>

          </div> 

        <!-- Text input-->
        <div class="form-group">
            <div class="col-md-2">
             D. <input type="radio" placeholder="" name="answer" value= "d" id=""> ' . $row["option4"].'
        </form>';
    }  
?>

My problem

I don't know where to put the form submit button to get $_POST values. If I put inside the loop it will print for every question, or if I put it outside the loop it won't work since the form tag is closed by then.

what I wanted to do is for every question i want to check the answer by taking if $_POST['answer'] == $row['answer'] , the $_POST['answer'] is the form value of the radio buttons

what's not working; what's the problem you're having? and where is $exam_id coming from? Your question is unclear. — Funk Forty Niner
– Funk Forty Niner, Commented Jul 19, 2017 at 14:45
i dont know where to put the form submit button to get $_POST values . if i put inside the loop it will print for every question, or if i put it outside the loop it wont work since the form tag is closed by then. what i wanted to do is now for every question i want to check the answer by taking if $_POST['answer'] == $row['answer'] , the $_POST['answer'] is the form value of the radio buttons — Gaurav Maharjan
– Gaurav Maharjan, Commented Jul 19, 2017 at 14:49
Looks at your error log, you have an unclosed while loop for a start, so I guess this does not actually compile — RiggsFolly
– RiggsFolly, Commented Jul 19, 2017 at 14:51
Hello and welcome to StackOverflow. Please take some time to read the help page, especially the sections named "What topics can I ask about here?" and "What types of questions should I avoid asking?". And more importantly, please read the Stack Overflow question checklist. You might also want to learn about Minimal, Complete, and Verifiable Examples. — Joshua Duxbury
– Joshua Duxbury, Commented Jul 19, 2017 at 15:06

Joshua Duxbury · Accepted Answer · 2017-07-19 15:30:01Z

1

Here is one solution by using a counter and only add the submit tag at the end when all the rows have been printed

$count = 0;
while($row=mysqli_fetch_assoc($result))
{
 $count = $count + 1;

 if($count == Count($row)){
   Add submit button here
 }
}

edited Jul 19, 2017 at 15:30

answered Jul 19, 2017 at 14:56

Joshua Duxbury

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1 Comment

Ravinder Reddy Over a year ago

I assume if condition should be if($count == Count($row)){

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