Showing each quiz inquiry separately - php

Question

I am trying to make a quiz using PHP and Mysql. I have create my database and filled it. The database is construct as follows: question_id(P.K),question, right answer, annswer1,answer2, answer3,level and test_id(F.K).
I have created a query that "draws" questions in a random order and I have shuffled the answers. The PHP script for showing the Qs and As to the user is the following:
while ($index <= (count($test)-1)){
echo $test[$index]['question']. "<br/>";
$question_id=$test[$index]['question_id'];
$s_ans=User_Model::shuffle_answers($question_id);
foreach ($s_ans as $s_a){
echo "<input type='radio' name='test_ans[$index][$s_a]' id='$question_id' />$s_a <br />";
}
echo "<hr/>";
$index++;
}
The above code shows all questions and their answers at once.
What I would like to do, and couldn't successfully get it done, is to show each question separately and when the user presses the "next" button, the next question accompanied by its answers will be shown to him.
So,
a)is there a way I can achieve that?
b)when I try to access user's answers I get the following output:
Array ( [0] => Array ( [I like ice cream => on ) [1] => Array ( [i don't go to school] => on ) [2] => Array ( [i play basketball] => on ) [3] => Array ( [i like sailing] => on ) )
How can i access the user's answers as to compare them with the right answer?

Answer 1

Well, since you're using PHP you can use sessions or cookies. It's probably not the most elegant solution, but I'd generate a reference string that represents a sequence of questions and store it in one session or cookie variable, and then have another session or cookie variable that represents the current position in the quiz. Furthermore you could have additional variables to keep track of score and other tidbits. Then when they hit the next button you just update variables and display the next question, or the end of the quiz if you've reached it.
If you want to do it dynamically without having to load another page then you'll need to look into javascript.

Answer 2

Multipage quizzes are very easy to do.
A) This can be done by removing the while() loop, but leave the counter to pass through a hidden <input> OR increasing the $_SESSION variable
$index = $_POST['index'] // OR $_GET['index'] OR $_SESSION['index'] depending on your form method
echo $test[$index]['question']. "<br/>";
$question_id=$test[$index]['question_id'];
$s_ans=User_Model::shuffle_answers($question_id);
foreach ($s_ans as $s_a){
echo "<input type='radio' name='test_ans[$index][$s_a]' id='$question_id' />$s_a <br />";
}
if ($index < $total_questions){
$index++; // Increase var, and then use in hidden input
echo "<input type='hidden' name='index' value='$index' />";
echo "<input type='submit' name='submit_answer' value='Next' />";}
else {
echo "<input type='submit' name='submit_answer' value='You Are Done' />";}
//OR
$_SESSION['index'] = $index++;
B) Without your code, this is just an example -
if ($user[$index]['their answer'] == $test[$index]['right answer'])
{ echo "You were correct";}
else
{ echo "Sorry, your answer was incorrect";}