<html>
<body>
<form method="post">
<?php
echo "<pre>";
var_export($_POST['R']);
echo "</pre>";
for($i=0; $i<20; $i++){
echo "$i.".$preguntas[$i]."<BR>";
echo"<input type='radio' name='R[$i]' value='a'>a){$r1[$i]}<br>";
echo"<input type='radio' name='R[$i]' value='b'>b){$r2[$i]}<br>";
echo"<input type='radio' name='R[$i]' value='c'>c){$r3[$i]}<br>";
echo "<BR><BR>";
}
?>
<button>submit</button>
</form>
</body>
</html>
You'll receive something like:
array (
0 => 'a',
1 => 'b',
2 => 'b',
)
For example:
<html>
<body>
<form method="post">
<?php
$questions = [
[
'question' => 'Who was first programmer?',
'answers' => [
'a' => 'Alan Turing',
'b' => 'Ada Lovelace',
'c' => 'Rasmus Lerdorf',
'd' => 'James Bond',
],
'correctAnswer' => 'b',
],
[
'question' => 'Who created php?',
'answers' => [
'a' => 'Alan Turing',
'b' => 'Ada Lovelace',
'c' => 'Rasmus Lerdorf',
],
'correctAnswer' => 'c',
],
[
'question' => 'Who created Turing machine?',
'answers' => [
'a' => 'David Beckham',
'b' => 'Rasmus Lerdorf',
'c' => 'Floyd Mayweather, Jr.',
'd' => 'Ada Lovelace',
'e' => 'Alan Turing',
],
'correctAnswer' => 'e',
],
];
if (!empty($_POST['response'])) {
foreach ($_POST['response'] as $questionId => $answerKey) {
echo '<h5>'.$questions[$questionId]['question'].'</h5>';
if ($questions[$questionId]['correctAnswer'] === $answerKey) {
echo 'Correct answer.<br>';
} else {
echo 'Wrong answer.<br>';
}
}
} else {
foreach ($questions as $questionId => $data) {
echo '<h5>'.$data['question'].'</h5>';
foreach ($data['answers'] as $key => $answer) {
echo '<input type="radio" name="response['.$questionId.']" value="'.$key.'">'.$key.') '.$answer.'<br>';
}
echo "<br><br>";
}
}
?>
<button>submit</button>
</form>
</body>
</html>
You can tweak it here
