Newbie here need lots of help

Laz

Hi,

I am very new to php.
I have to do a web based (Form) questionaire with 4 questions.
Each question has 4 choices labeld A, B, C, D.

The correct answers will be :
quest. 1 will be A
quest. 1 will be B
quest. 1 will be C
quest. 1 will be D.
When the user submits the Form(questionaire) Ii need to Score the questions and output the overall percentage of correct answers, and indicate the wrong answers.

Here is my problem. And it is a big problem.
I am not sure at all how or where to begin to code this.
I somewhat know the if, elseif, but not sure how to do this one.
I can create a Form for this...it is the PHP I am needing help with.

Can someone, anyone help. Please
Laz

dagon

post some code of what you have tried, your more likely to get help, otherwise it looks like you expect us to write the whole thing for you.

Laz

Here is the Form:

Question 1: What is 5+5?:<br>
<input type="radio" name"q1" value="a">a) 10<br> 
<input type="radio" name"q1" value="b">b) 5<br> 
<input type="radio" name"q1" value="c">c) 7<br>
<input type="radio" name"q1" value="d">d) 2 <br>
<br>
<br>
Question 2: What is 5x2?:<br>
<input type="radio" name"q2" value="a">a) 4<br> 
<input type="radio" name"q2" value="b">b) 10<br> 
<input type="radio" name"q2" value="c">c) 8<br>
<input type="radio" name"q2" value="d">d) 14 <br>
<br>
<br>
Question 3: What is 10x2?:<br>
<input type="radio" name"q3" value="a">a) 14<br> 
<input type="radio" name"q3" value="b">b) 10<br> 
<input type="radio" name"q3" value="c">c) 20<br>
<input type="radio" name"q3" value="d">d) 19 <br>
<br>
<br>
Question 4: What is 100x2?:<br>
<input type="radio" name"q4" value="a">a) 2000<br> 
<input type="radio" name"q4" value="b">b) 102<br> 
<input type="radio" name"q4" value="c">c) 125<br>
<input type="radio" name"q4" value="d">d) 200 <br>

<input type="submit"  value="Click toSubmit">
<input type="reset" value"Erase to Clear">

</form>

Here is the php I written so far:

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">

<?php
$score = 0;
if ($_POST['q1'] == 'A')
 $score++;
if ($_POST['q2'] == 'B')
 $score++;
if ($_POST['q3'] == 'C')
 $score++;
if ($_POST['q4'] == 'D')
 $score++;
?> 


<html>
<head>
<title>Your Exam Results!</title>
</head>
<body>
<h1>Your Exam Results!</h1>

<?php
echo '<b>Your average score was ' . $score . '/4</b><br><br>';
?> 

</body>
</html>

I am not sure how to show which questions were wrong?
Laz

Laz

Here is the Form:

Question 1: What is 5+5?:<br>
<input type="radio" name"q1" value="a">a) 10<br>
<input type="radio" name"q1" value="b">b) 5<br>
<input type="radio" name"q1" value="c">c) 7<br>
<input type="radio" name"q1" value="d">d) 2 <br>
<br>
<br>
Question 2: What is 5x2?:<br>
<input type="radio" name"q2" value="a">a) 4<br>
<input type="radio" name"q2" value="b">b) 10<br>
<input type="radio" name"q2" value="c">c) 8<br>
<input type="radio" name"q2" value="d">d) 14 <br>
<br>
<br>
Question 3: What is 10x2?:<br>
<input type="radio" name"q3" value="a">a) 14<br>
<input type="radio" name"q3" value="b">b) 10<br>
<input type="radio" name"q3" value="c">c) 20<br>
<input type="radio" name"q3" value="d">d) 19 <br>
<br>
<br>
Question 4: What is 100x2?:<br>
<input type="radio" name"q4" value="a">a) 2000<br>
<input type="radio" name"q4" value="b">b) 102<br>
<input type="radio" name"q4" value="c">c) 125<br>
<input type="radio" name"q4" value="d">d) 200 <br>

</form>

Here is the php I written so far:

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">

<?php
$score = 0;
if ($POST['q1'] == 'A')
$score++;
if ($POST['q2'] == 'B')
$score++;
if ($POST['q3'] == 'C')
$score++;
if ($POST['q4'] == 'D')
$score++;
?>

<html>
<head>
<title>Your Exam Results!</title>
</head>
<body>
<h1>Your Exam Results!</h1>

<?php
echo '<b>Your average score was ' . $score . '/4</b><br><br>';
?>

</body>
</html>

I am not sure how to show which questions were wrong?
Laz

bradgrafelman

When posting HTML/PHP code, please use the board's respective bbcode tags (ex.

for PHP code) as it makes your code much easier to read and analyze. I've already added these tags to your post for you, but please keep this in mind for the future.

To answer your question, you could handle valid/invalid answers as you go:

if(empty($_POST['q1']))
    echo 'Question 1 incorrect (no answer)<br>';
elseif($_POST['q1'] == 'A') {
    $score++;
    echo 'Question 1 correct...<br>';
} else
    echo 'Question 2 incorrect (your answer: ' . $_POST['q1'] . ', correct answer: A)<br>';
// etc. for all questions

As you can see, this is a little rough in terms of scalability. You could generalize the output and loop through an array of questions/answers you specify, ex.:

$correct = array(1 => 'A', 2 => 'B', 3 => 'C');
$score = 0;

foreach($correct as $q_num => $correct_ans) {
    if(empty($_POST['q'.$q_num]))
        echo "Question $q_num incorrect (no answer)<br>";
    elseif($_POST['q'.$q_num] == $correct_ans) {
        $score++;
        echo 'Question $q_num correct!<br>';
    } else
        echo 'Question $q_num incorrect (your answer: ' . $_POST['q'.$q_num] . ", correct answer: $correct_ans)<br>";
}

echo "Total correct: $score";