[Help] How to change variable increments during while statement

[cinos11]

Well, in this code which i created:

<?php 
$name2 = $_REQUEST['name'] ;
$name = strip_tags($name2);
$ip = $_SERVER['REMOTE_ADDR']; 


if($name == '') {print "<center><br /><br /><b><a href=\"javascript:history.go(-1)\">You have not entered a name, click here to go back.</a></b></center>";}
else {
?>

<?php
$q1 = $_POST['q1'];
$q2 = $_POST['q2'];
$q3 = $_POST['q3'];
$q4 = $_POST['q4'];
$q5 = $_POST['q5'];
$q6 = $_POST['q6'];
$q7 = $_POST['q7'];
$q8 = $_POST['q8'];
$q9 = $_POST['q9'];
$q10 = $_POST['q10'];
$q11 = $_POST['q11'];
$q12 = $_POST['q12'];
$q13 = $_POST['q13'];
$q14 = $_POST['q14'];
$q15 = $_POST['q15'];
$q16 = $_POST['q16'];
$q17 = $_POST['q17'];
$q18 = $_POST['q18'];
$q19 = $_POST['q19'];
$q20 = $_POST['q20'];

$score = 0;
if ($q1== 'a')
$score++;
if ($q2 == 'b')
$score++;
if ($q3 == 'b')
$score++;
if ($q4 == 'a')
$score++;
if ($q5 == 'a')
$score++;
if ($q6 == 'b')
$score++;
if ($q7 == 'c')
$score++;
if ($q8 == 'a')
$score++;
if ($q9 == 'd')
$score++;
if ($q10 == 'a')
$score++;
if ($q11 == 'b')
$score++;
if ($q12 == 'd')
$score++;
if ($q13 == 'a')
$score++;
if ($q14 == 'e')
$score++;
if ($q15 == 'b')
$score++;
if ($q16 == 'c')
$score++;
if ($q17 == 'd')
$score++;
if ($q18 == 'a')
$score++;
if ($q19 == 'b')
$score++;
if ($q20 == 'd')
$score++;

$db;
$sql="INSERT INTO mstest2_scores (name, score, ip) VALUES ('".$name."','".$score."','".$ip."')";

if (!mysql_query($sql,$conn))
  {
  die('Error: ' . mysql_error());
  }
    echo "Success! Go here to see a list of everyone's scores: <a href=\"/?p=msresultscores2\">All Scores</a>";

echo '<h1>Your Results for the <b>Quiz</b>!</h1>';

echo '<b>Your knowledge score was ' . $score . '/20</b><br><br>';
if ($score <= 10)
echo 'You failed the test.';
else if ($score == 20)
echo 'Congratulations, you got a perfect score.';
else
echo 'Not bad, you scored average.'; 
?>
<?php
$result = mysql_query("SELECT * FROM mstest2_qa");

while($row = mysql_fetch_array($result))
  {
  $question_number =  $row['question_number'];
  $question = $row['question'];
  $answer = $row['answer'];
  $row_a = $row['a'];
  $row_b = $row['b'];
  $row_c = $row['c'];
  $row_d = $row['d'];
  $row_e = $row['e'];
  $row_f = $row['f'];
  $row_g = $row['g'];
  $row_h = $row['h'];
  

echo ('<b><u>Question '.$question_number.': '.$question.'</u></b><br />');

if($row_a == ""){ } else{
echo (' a.  '.$row_a.' <br />'); }

if($row_b == ""){ } else{
echo ('b. '.$row_b.' <br />'); } 

if($row_c == ""){ } else{
echo ('c. '.$row_c.' <br />'); } 

if($row_d == ""){ } else{
echo ('d. '.$row_d.' <br />'); } 

if($row_e == ""){ } else{
echo ('e. '.$row_e.' <br />'); } 

if($row_f == ""){ } else{
echo ('f. '.$row_f.' <br />');
} 

if($row_g == ""){ } else{
echo ('g. '.$row_g.' <br />');
} 

if($row_h == ""){ } else{
echo ('h. '.$row_h.' <br />');
}


$showanswer = $q1++;

echo '<u><i>You Answered: ' . $showanswer . '<br></u>';
echo '<u>Correct Answer: '.$answer.'<br></i></u><hr>';
  }
mysql_close($conn);
}
?>

 

Right where it says $showanswer = q1++;

Instead of it going a,b,c,d,e,f and so on.

I need to be able to change that variable so it becomes

q1,q2,q3,q4,q5,q6 and so on.

 

How do i get it to do that instead?

[ignace]

I re-wrote your code to a simpler, properly indented example.

 

if (!empty($_POST)) {
  $answers = array(
    ''/*!important*/, 'a', 'b', 'b', 'a', 'a', 'b', 'c', 'a', 'd', 'a', 'b',
    'd', 'a', 'e', 'b', 'c', 'd', 'a', 'b', 'd');
  
  $score = 0;
  foreach ($answers as $key => $value) {
    if (isset($_POST['q' . $key])) {
      if ($value === $_POST['q' . $key]) {
        $score += 1;
      }
    }
  }
  
  $sizeof = sizeof($answers) - 1;
  if ($sizeof === $score) {
    echo 'Congratulations, you got a perfect score.';
  } else if (floor($sizeof / 2) < $score) {//11+
    echo 'Not bad, you scored average.';
  } else {
    echo 'You failed the test.';
  }
}