Question

I’ve previously made a text file and turned it into multidimensional array to display as the questions for my quiz.

Note: I am unable to insert images therefore I cannot provide any example so I’ll try to be as descriptive as I can.

I’m trying to display only one question at a time, every time a user clicks on my quiz.

This is my code so far. The main.php page:

<h2>ONLINE QUIZ</h2>
<ul>
    <li><a href='question.php'>Take quiz</a></li>
    <li><a href='module.php'>Admin Module</a></li>
</ul>
<?php

$file = fopen('data.txt', 'r');

$array = array();
while ($line = fgetcsv($file)) {
    $array[] = $line;
}

fclose($file);

session_start();
$_SESSION["questions_array"]=$array;

?>

And the question.php page:

<?php

session_start();
$array=$_SESSION["questions_array"];

foreach ($array as $q => $data) {
    echo '<p>'.array_shift($data).'</p>';
    foreach ($data as $a => $answer) {
        echo 
             '  <input type="radio" name="question-'.$q.'" id="question-'.$q.'"'.
             '         value="'.$a.'"/>'.
             '  <label for="question-'.$q.'">'.$answer.'</label>'.
             '<br>';
    }

}

?>

When the Take quiz link is clicked, the user is taken to the question page where only one question is shown. The user then picks an answer and hits submit. This submit button will take the user to the result page where they can then hit continue.

The Continue link will redirect them back to the question page where the next question is displayed.

From stuff that I’ve done before, I am attempting to use the isset() function to make this happen. However, the problem is that I’m not sure how exactly to write my isset().

I’ve found this snippet from this site, I’m not sure if it’s useful, but:

if (!isset($_SESSION['FirstVisit'])) {

    //show site for the first time part
    $_SESSION['FirstVisit] = 1;
    header("Location: http://example.com/index.php");

    // Don't forget to add http colon slash slash www dot before!

    } else { Show normal site }

But once again I found myself blank. How exactly do I use the isset() to display only one question?

Answer 1

I kinda get what your asking, Ive jotted out the basic structure. This can all be done on one page, hope it helps.

EDIT:

As im such a nice guy heres a complete script, using my prev suggestion ;p

<?php
session_start();
echo '<h2>ONLINE QUIZ</h2>';


//Scores
if($_SERVER['REQUEST_METHOD']=='GET' && isset($_GET['scores'])){
    echo 'Basic output for scores';
    echo '<pre>';
    print_r($_SESSION['answers']);
    echo '</pre>';
    unset($_SESSION['answers']);
    unset($_SESSION['question']);
}


//Session question/array is set
if(isset($_SESSION['question']) && isset($_SESSION['questions_array'])){

    //Handle prev question post
    if($_SERVER['REQUEST_METHOD']=='POST'){
        //process prev question
        $_SESSION['answers'][$_SESSION['question']-1]=(0+$_POST['answer']);
    }

    if($_SESSION['question'] < $_SESSION['total_question']){
        $q=$_SESSION['question'];
        //EDIT - Shuffle answers for output
        //Hold the question into a var
        $question = $_SESSION['questions_array'][$q][0];
        //unset the question from the array
        unset($_SESSION['questions_array'][$q][0]);
        //put all the pos answers into a new array
        $answers = $_SESSION['questions_array'][$q];
        //shuffle the answers
        shuffle($answers);


        echo '<form method="POST" action="">
              <h3>'.$question.'</h3>';
        //loop through the answers
        foreach($answers as $key=>$value){
            //if the value is nothing cont to next, removed question key 0
            if($value==''){continue;}else{
                echo '<p><input type="radio" value="'.$value.'" name="answer">'.$value.'</p>';
            }
        }
        echo '<p><input type="submit" value="Submit"></p>
        </form>';

    }else{
        //Quiz Complete
        echo 'Test Complete <a href="'.basename($_SERVER["SCRIPT_FILENAME"]).'?scores=1">Check scores</a>';
    }

    //Assign next question to session
    $_SESSION['question']++;
}else{

    //Pages first load so show quiz index
    $_SESSION['question']=0;
    get_questions();
?>
    <ul>
        <li><a href='<?=basename($_SERVER["SCRIPT_FILENAME"]);?>'>Take quiz</a></li>
        <li><a href='module.php'>Admin Module</a></li>
    </ul>
    <?php
}

//Function to put questions in session
function get_questions(){
    $file = fopen('data.txt', 'r');
    $array = array();
    while ($line = fgetcsv($file,1000,',')) {
        $array[] = $line;
    }
    fclose($file);
    $_SESSION['questions_array']=$array;
    $_SESSION['total_question']=count($array);
    return;
}
?>