Getting all array values in loop - php

Question

So here's my code in getting an input from a user on how many questions (multiple choice) he/she would like to make:
Multiple choice: <input type = "text" name="MC"><br>
<input type = "submit" name = "confirm" value = "Confirm">
After that, this is the code of how many questions the system will generate:
<?php
if(isset($_POST['confirm'])){
$MC = $_POST['MC'];
echo "<form method = 'POST' name = 'items' action ='createquestions.php'>";
$items = 1;
for ($x = 1; $x <= $MC; $x++) {
echo "Question Number $items:"; echo "<input type = 'text' name = 'questions[]' style='width: 500px'><br><br>";
echo "A. "; echo "<input type = 'text' name = 'ans1[]'>";
echo "B. "; echo "<input type = 'text' name = 'ans2[]'><br>";
echo "C. "; echo "<input type = 'text' name = 'ans3[]'>";
echo "D. "; echo "<input type = 'text' name = 'ans4[]'><br>";
echo "Correct Answer: "; echo "<input type = 'text' name ='cans[]'><br><br>";
$items++;
}
echo "<input type ='submit' name = 'save' value = 'Save'>";
echo "</form>";
}
?>
<?php
The problem is that it will only save the last input of the user.
For example, I have inputted 2 in the Multiple choice: --textbox here--
This code will generate 2 questions, 8 choices, 2 cans = correct answer but it will only save the 2nd question, answers, and the correct answer. the system won't get the record of the 1st question, answer, and the correct answer.
Here is the code where I would insert it on the database:
<?php
if(isset($_POST['save'])){
$user_id = $_SESSION['id'];
$questions = $_POST['questions'];
$ans1 = $_POST['ans1'];
$ans2 = $_POST['ans2'];
$ans3 = $_POST['ans3'];
$ans4 = $_POST['ans4'];
$cans = $_POST['cans'];
foreach($questions as $q){
echo "<input type = 'hidden' value = '$q'>";
}
require_once('xcon.php');
$query = "INSERT INTO mcq (mc_id, user_id, questions, ans1, ans2, ans3, ans4, cans)
VALUES ('NULL','$user_id','$q','$ans1','$ans2','$ans3','$ans4','$cans')";
$result = mysql_query($query);
if($result){
echo 'Insert Success!';
}
else{
echo 'Error';
}
}
?>

Answer 1

When you save you should be running through a loop again. Try this maybe?
<?php
if(isset($_POST['save'])){
$user_id = $_SESSION['id'];
require_once('xcon.php');
foreach ($_POST['questions'] as $key => $question){
$ans1 = $_POST['ans1'][$key];
$ans2 = $_POST['ans2'][$key];
$ans3 = $_POST['ans3'][$key];
$ans4 = $_POST['ans4'][$key];
$cans = $_POST['cans'][$key];
echo "<input type = 'hidden' value = '$question'>";
$query = "INSERT INTO mcq (mc_id, user_id, questions, ans1, ans2, ans3, ans4, cans)
VALUES ('NULL','$user_id','$question','$ans1','$ans2','$ans3','$ans4','$cans')";
$result = mysql_query($query);
if($result){
echo 'Insert Success!<br>';
}else{
echo 'Error<br>';
}
}
}
?>

Answer 2

According to this post you should use:
echo "Question Number $items:"; echo "<input type = 'text' name = 'questions' style='width: 500px'><br><br>";
echo "A. "; echo "<input type = 'text' name = 'ans[]'>";
echo "B. "; echo "<input type = 'text' name = 'ans[]'><br>";
echo "C. "; echo "<input type = 'text' name = 'ans[]'>";
echo "D. "; echo "<input type = 'text' name = 'ans[]'><br>";
echo "Correct Answer: "; echo "<input type = 'text' name ='cans'><br><br>";
And this:
$ans1 = $_POST['ans'][0];
$ans2 = $_POST['ans'][1];
$ans3 = $_POST['ans'][2];
$ans4 = $_POST['ans'][3];
Explanation
You only need to post ans[] repeatedly , and not
ans1[], ans2[], ans3[]... in order to get an array like
$_POST['ans'][0], $_POST['ans'][1]...
or you can use
ans1, ans2, ans3
(without brackets []) to read as
$_POST['ans1'], $_POST['ans2'], $_POST['ans3']...

Answer 3

You are using element naming in a strange way, you are using array, but still use numbers. Try generating like this:
for ($x = 0; $x <= $MC; $x++) {
echo "<input type = 'text' name = 'questions[$i]'>";
echo "A. <input type = 'text' name = 'ans[$i][A]'>";
echo "B. <input type = 'text' name = 'ans[$i][B]'><br>";
echo "C. <input type = 'text' name = 'ans[$i][C]'>";
echo "D. <input type = 'text' name = 'ans[$i][D]'><br>";
echo "Correct Answer: <input type = 'text' name ='cans[$i]'><br><br>";
}
Then you'll get the following results in your $_POST:
[
"questions" => [
0 => "question1",
...
]
"ans" => [
0 => [
"A" => "answer A",
"B" => "answer B",
"C" => "answer C",
"D" => "answer D",
]
...
]
"cans" => [
0 => "A",
....
]
]
Which is easily processed with a foreach:
foreach ($_POST['questions'] as $key => $question) {
// $question == 'question1';
$answers = $_POST['ans'][$key]; // array of answers
$solution = $_POST['cans'][$key];
}