cookie value back into input fields - php

Question

i'm actually new to PHP so i need your help!
I'm using a table within a form, and SQL Server to fill the table rows.
The form starts with an input field for quantity input type="number".
<form name="testform" method="post" action="submit.php">
<?php
$sql="query goes here";
$query=sqlsrv_query( $conn, $sql, array(), array( "Scrollable" => SQLSRV_CURSOR_KEYSET ));
if ($query) {
while($row = sqlsrv_fetch_array( $query, SQLSRV_FETCH_ASSOC) ) {
echo "<td><input type='number' name='quantity[]'></td>";
}
}
?>
</form>
After submitting the form, i want the user to have the possibility to navigate back to the previous page to change the quantity input if possible.
So i need to restore the input values when navigating back (all values are now lost when navigating back).
I found this way by using the Cookies to store the input values so i found a way to store all values of input name='quantity[]' (array) in the cookies. And print them on the page when navigating back. It prints all values correct with the correct array index position as well.
Here's some of the code:
On my form page (form.php) for receiving cookies.
<?php
if (isset($_COOKIE['Cookie_Info'])){
$cookie = $_COOKIE["Cookie_Info"];
$cookie = stripslashes($cookie);
$savedAantArray = json_decode($cookie, true);
echo '<pre>';
print_r($savedAantArray); echo '</pre>';
} else {
$data = array(
'quantity[]' => ''
);
}
?>
On my submit page (submit.php) for setting cookies, with link to return to form.php page.
<?php
if (isset($_POST['submit'])) {
$post_arr = $_POST;
$expire = 8*3600;
setcookie("Cookie_Info", serialize($post_arr), time()+$expire);
}
?>
Make Some Changes..
Result when returning to form.php
Cookies
Array
(
[quantity] => Array
(
[0] => 8
[1] => 8
)
[submit] => Submit
)
Here's my question:
Is there a way to store those values from the array into all the right input fields?
Instead of printing them just as an array (which is not what i want, but i wanted to test the cookie storage).
Thanks in advance!

Answer 1

Thanks Yvon, got it working now.
Again on my second page:
<?php session_start();
$_SESSION['quantity'] = $_POST['quantity'];
foreach($_POST['quantity'] as $key => $value) {
echo "<input name='quantity' value='$value'>\n<br />";
}
?>
Back to first page:
<?php session_start();
$quantity=$_SESSION['quantity'];
print_r($quantity);
echo "<br \>";
foreach($_SESSION['quantity'] as $key => $value) {
echo "<input name='quantity[]' value='$value'>\n<br />";
}
?>

Answer 2

Just a small edit, got it working perfect now (including printing the correct amount of rows).
On the first page:
<form name="form" method="post" action="second.php">
<?php session_start();
include 'db_connect.php';
$quantity=$_SESSION['quantity']; print_r($quantity); echo "<br \>";
$sql ="SELECT * FROM X0ONTDTA.WEBRELGB";
$query = sqlsrv_query( $conn, $sql, array(), array( "Scrollable" => SQLSRV_CURSOR_KEYSET ));
if($query){
if (isset($_SESSION['quantity'])){
foreach($_SESSION['quantity'] as $key => $value) {
echo "<input name='quantity[]' value='$value'>\n<br />";
}
}
elseif($query){
while($row = sqlsrv_fetch_array( $query, SQLSRV_FETCH_ASSOC) ) {
echo "<input name='quantity[]' value=''>\n<br />";
}
}
}
?>
<input type="submit" value="Submit" name="submit"></input>
</form>
On the second page:
<?php session_start();
$_SESSION['quantity'] = $_POST['quantity'];
foreach($_POST['quantity'] as $key => $value) {
echo "<input name='quantity' value='$value'>\n<br />";
}
echo "<pre>";
print_r($_POST['quantity']);
echo "</pre>";
?>
Go Back
Resulting in this:
after submit
going back