Question

I have a php page with multiple choice quiz questions like this

<p>1. Is Manhattan near New York?<br>
    <input type="radio" name="ans1" value="3">
    Yes<br>
    <input type="radio" name="ans1" value="2">
    Maybe<br>
    <input type="radio" name="ans1" value="1">
    No</p>
  <p>2. Do you like Indian food?<br>
    <input type="radio" name="ans2" value="1">
    Some times<br>
    <input type="radio" name="ans2" value="3">
    Never<br>
    <input type="radio" name="ans2" value="2">
    Always</p>

The page posts to itself and checks if the answer is right or wrong like this

if($ans1 == "3") { 
$test_complete .="Question one is <span class='green'>correct</span>, well done!<br/>";  
}else{ 
$test_complete .="Question one is <span class='red'>incorrect</span>!<br/>"; 
} 
// change the quest2 to the right answer
if($ans2 == "2") { 
$test_complete .="Question two is <span class='green'>correct</span>, well done!<br/>"; 
}else{ 
$test_complete .="Question two is <span class='red'>incorrect</span>!<br/>"; 
}

Now instead of telling the user that answer one or two is correct i would like to run a counter where it calculates the number of correct and number of wrong answers and displays it in two table boxes along with one box for total number of questions.

Answer 1

There are multiple ways to do this. I would have an array of correct questions which corresponds the questions and then compare them. For example:

$correct_answers = array('3', '2');
for ($i = 0; $i < $number_of_questions; $i++)
{
   $ans_var = 'ans'.$i;
   if ($_POST[$ans_var] == $correct_answers[$i])
   {
      $score++;
   }
}