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Why does setcookie function not work?
Hello,
I am trying to edit a PHP script and now it started to feel tired. What I'm trying to do is setting a cookie but it was not possible because of a headers already sent error. Then, I added "obstart()" at the beginning of the page to solve the problem. It worked flawless but the problem is now I cannot delete these cookies by setting them to a prior date when users log out.
It looks like PHP totally ignores the setcookie() function. The same thing happened while creating them but was solved after adding obstart() at the start. Same trick doesn't work in my logout.php
Any ideas?
I am trying to edit a PHP script and now it started to feel tired. What I'm trying to do is setting a cookie but it was not possible because of a headers already sent error. Then, I added "obstart()" at the beginning of the page to solve the problem. It worked flawless but the problem is now I cannot delete these cookies by setting them to a prior date when users log out.
It looks like PHP totally ignores the setcookie() function. The same thing happened while creating them but was solved after adding obstart() at the start. Same trick doesn't work in my logout.php
Any ideas?
PHP
Last Comment
Ray Paseur
ASKER
Sorry, I'm not sure if I understood you. How come can ob_start() work for one page but not for another page?
Oh you are not using ob_clear/flush in a loop somewhere?
In that case you shouldn't need ob_start()
The error usually means that you allready sent something to the browser forcing headers to be sent (as they are the first thing to go to a browser, and thats what php uses to set cookies).
Put it all the way on top of your script before anything else (even html, css and whatever).
Then it should be working.
In that case you shouldn't need ob_start()
The error usually means that you allready sent something to the browser forcing headers to be sent (as they are the first thing to go to a browser, and thats what php uses to set cookies).
Put it all the way on top of your script before anything else (even html, css and whatever).
Then it should be working.
https://www.experts-exchange.com/questions/24166909/Cookies-not-setting.html?cid=236&anchorAnswerId=23775457#a23775457
This question may help explain things further.
This question may help explain things further.
Pretty much, you cant have any HTML or echo's before the setcookie()
ASKER
This is really what I do but hopelessly even setting them as a first thing on my page, it doesn't work.
I don't use flush or clear functions because simply ob_start() always worked for other related problems (but not this time though). The problem is I am using frames and what I'm editing is only a part of three separate pages. So, there is no way I can prevent others outputting (at least I don't know how to do so)
Isn't there a reason ob_start() works for one page but not for another page?
I don't use flush or clear functions because simply ob_start() always worked for other related problems (but not this time though). The problem is I am using frames and what I'm editing is only a part of three separate pages. So, there is no way I can prevent others outputting (at least I don't know how to do so)
Isn't there a reason ob_start() works for one page but not for another page?
Is this PHP file being included/required? or is it running on it's own page?
ASKER
It works on its own. The user is redirected to this page when s/he clicks "sign out".
Let me attach the code snippet
Let me attach the code snippet
<?php
ob_start();
include "inc/baglan.php";
if ($verified_kat == "admin") {
$gnick = "&$verified_user";
$sorgu = "DELETE FROM online WHERE nick = '$gnick' LIMIT 1";
mysql_query($sorgu);
}
else if ($verified_kat == "mod") {
$gnick = "+$verified_user";
$sorgu = "DELETE FROM online WHERE nick = '$gnick' LIMIT 1";
mysql_query($sorgu);
}
else {
$sorgu = "DELETE FROM online WHERE nick = '$verified_user' LIMIT 1";
mysql_query($sorgu);
}
setcookie('user_name','', (time()-192000), '/', '.kayiprihtim.org', 0);
setcookie('sec_user','', (time()-192000), '/', '.kayiprihtim.org', 0);
?>
<SCRIPT src="images/top.js" type=text/javascript></SCRIPT>
<SCRIPT language=javascript src=\"images/sozluk.js\"></SCRIPT>
<META content="bar ortamlari" name=keywords>
<META content="bar ortamlari" name=description><LINK href="favicon.ico"
rel="shortcut Icon"><LINK href="favicon.ico" rel=icon><LINK
href="images/sozluk.css" type=text/css rel=stylesheet>
<META http-equiv=Content-Type content="text/html; charset=iso-8859-9">
<SCRIPT language=javascript src="images/sozluk.js"></SCRIPT>
<center>Bizi tercih etti iniz için te_ekkürler..<br>
ASKER
By the way, $verified_user is a session variable that is defined by session_register function.
setting sessions I think can interfere with setting cookies.
ASKER
Well, even putting the part of session variables out of my code doesn't help either. This is what I thought first too...
Prety much if you set a session it sets the header and you cant set a cookie after thats done.
ASKER
But there are examples of websites using both even on my another website, i both use session variables and cookies? Is there a source verifying this?
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Here is a sample "logout" script.
<?php // RAY_logout.php
// CLEAR THE INFORMATION FROM THE SESSION
$_SESSION = array();
// IF THE SESSION IS KEPT IN A COOKIE, FORCE IT TO EXPIRE
if (isset($_COOKIE[session_name()]))
{
setcookie(session_name(), '', time()-42000, '/');
}
// TELL PHP TO ELIMINATE THE SESSION
session_destroy();
// REDIRECT TO THE HOME PAGE
header("Location: /");
exit;
?>
Here is another sample logout script that teaches how to eliminate all the cookies.
Please post back here if you have any questions, ~Ray
Please post back here if you have any questions, ~Ray
<?php // RAY_logout.php
error_reporting(E_ALL);
define('COOKIE_LIFE', 60*60*24); // A 24-HOUR DAY IN SECONDS ( = 86,400 )
$cookie_expires = time() - date('Z') - COOKIE_LIFE;
// CLEAR THE INFORMATION FROM THE $_SESSION ARRAY
$_SESSION = array();
// IF THE SESSION IS KEPT IN COOKIE, FORCE SESSION COOKIE TO EXPIRE
if (isset($_COOKIE[session_name()]))
{
setcookie(session_name(), '', $cookie_expires, '/');
}
// TELL PHP TO ELIMINATE THE SESSION
session_destroy();
// CLEAR ALL COOKIES WITH THIS CODE
foreach ($_COOKIE as $key => $value)
{
setcookie($key, '', $cookie_expires, '/');
}
// REDIRECT TO THE HOME PAGE
header("Location: /");
exit;
?>
ASKER
Ray Paseur, It worked like a miracle. Thanks for the efforts.
ASKER
Thank you.
Thanks for the points! It's a great question and one that confuses a lot of developers. Best regards, ~Ray
A possible solution is to inject your page with javascript that handles everything when the page load complete's.
Though i have found this though when using output buffering.