Cookie values in php

**altonator** · Jan 3 '09, 03:01 PM

There are several ways of doing what you're trying to do. In fact it's probably THE most common thing in PHP ever.

Your method is slightly odd.

Firstly, using javascript to redirect is silly. If the user has Javascript disabled then they wont be redirected. They'll just see an empty page.

**IF** you want to redirect then do it in php:

Code:

<?php
header("Location: some_other_page.php");
?>

As with set_cookie() you need to do that before you output anything to the browser.

If you want to save what the user has input into the form fields then you can either have your form submit to itself, and have a hidden form field, e.g.

Code:

<input type="hidden" name="subbmited" value="1" />

and then your overall page looks something like:

Code:

<?php
if($_POST['submitted']){//if they DID submit the form
    //do validation
    if( validation passed){
         header("Location: success_page.php");
         exit(); //don't display the form, just end the script here
    }
}
//else, if it failed validation, or if the form wasn't submitted
//...display the form
?>
<form action="this_page" method="post">
<!-- put form here y'all -->
</form>

Then in each of your form fields you can do:

Code:

<input name="whatever" value="<?php print $_POST['whatever']; ?>" />

Some people would say that this method is crude (which it kind of is), but I think it's far less crude than what you've got.

If you ever want to save information about the user between pages then you can use:

Code:

<?php
session_start(); //gives the user a cookie to uniquely identify them
//you can then save variables in the _SESSION array.
//These are saved on your server, but they are unique for each user.
//When you re-open the session on another page PHP will give you the variables that were set for that user.
$_SESSION['name'] = $_POST['name'];
$_SESSION['phone_number'] = '123';
?>

Then in another page you can do:

Code:

<?php
session_start(); //re-open the session
print $_SESSION['name']; //will print out the name for the user that's viewing the page
?>

I hope that helps.
Altonator

**Atli** · Jan 3 '09, 03:09 PM

Hi.

I usually like posting things to the same page I am on, so if I need the user to fix something in the form and resubmit, the data is all there.

For example:
[code=php]
<?php
$data = array(
"someValue" => ""
);

// This checks if the form has been submitted
// and tries to process it if it has.
if(isset($_POST['isSubmitted']))
{
// Do whatever checking you need to do
// and process the data here.

if(/* The data was processed successfully */) {
header("Locatio n: successPage.php ");
die();
}
else {
// Get the data ready to be insert into the form again.
$data = htmlentities($_ POST['someValue']);
}
}

// Note that if the form was successfully processed,
// the code would never reach this point.

// This shows the form, including the data
// your received last time it was posted. (If any)
echo <<< HTML
<form action="{$_SERV ER['PHP_SELF']}" method="post">
<input type="hidden" name="isSubmitt ed" value="1">
<input type="text" name="someValue " value="{$data['someValue']}"><br>
<input type="submit">
</form>
HTML;
?>[/code]
Or you could simply use session to transfer the data between pages.

Edit
I see altonator beat me to it :)

Cookie values in php

Cookie values in php

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