Using form contents to add values to $_SESSION array
Question by BigRob
I’m trying to make a page that takes a form submission and adds the contents as a new value in the $_SESSION() array, what seems to be happening though is the value is being overridden.
The form has 3 text inputs named a, b and c and refreshes the page on submission. What tells me it’s being replaced is $_SESSION[0] will display 1 2 and 3 as defined below, then the next row defined by $_POST will be the same but with the array values replaced by the last submitted values rather than adding the last submitted as another row.
<form action="test2.php" method="post">
<input type="text" name="a">
<input type="text" name="b">
<input type="text" name="c">
<input type="submit" value="Submit">
</form>
<?php
if (isset($_POST['a']))
{
$a = $_POST['a'];
$b = $_POST['b'];
$c = $_POST['c'];
$order = array('a' => $a, 'b' => $b, 'c' => $c);
$_SESSION[0] = array('a' => 1, 'b' => 2, 'c' => 3);
$_SESSION[] = $order;
$count = count($_SESSION);
for ($i = 0; $i < $count; $i++) {
echo "w: " . $_SESSION[$i]['a'] . "n";
echo "h: " . $_SESSION[$i]['b'] . "n";
echo "p: " . $_SESSION[$i]['c'] . "n";
echo "<br />";
}
}
?>
Would be extremely grateful for any help,
Thanks
Answer by Nick Pyett
It looks to me like you are trying to add a new array to a new $_SESSION var each time the form is submitted. The method you are using will only add the value to the $_SESSION array for that page load – it won’t actually be in the $_SESSION array! Confusing right? So either of these won’t work…
$_SESSION[] = 'value or array';
$_SESSION[1] = 'some other stuff';
But this will, due there being text in the $_SESSION key (and don’t forget to start the session).
session_start();
$next = count($_SESSION) + 1;
$next = 'foo' . $next;
$_SESSION[$next] = 'bar' . $next;
This will generate the below for “print_r($_SESSION)”.
Array ( [foo1] => barfoo1 [foo2] => barfoo2 [foo3] => barfoo3 [foo4] => barfoo4...
Answer by Starx
Most simplest way of adding form values would be
$_SESSION['form'] = $_POST; //once the form is posted
Then access the values using
$_SESSION['form']['fieldname'];
