Can't Set PHP Cookie on the Same Page

Cookie not printing once it is created in the same page

My Question is the cookie is created when i run the page index.php
first time itself and once i print the cookie it should be printed,
then

Yes the cookie is created when you run the index.php the first time.

what is the reason the cookie Not getting print in the first run
itself ?

Once the cookies have been set, they can be accessed on the next page load with the $_COOKIE or $HTTP_COOKIE_VARS arrays.

Source

Browse down the link to see the common pitfalls..

Common Pitfalls:

• Cookies will not become visible until the next loading of a page that the cookie should be visible for. To test if a cookie was successfully set, check for the cookie on a next loading page before the cookie expires. Expire time is set via the expire parameter. A nice way to debug the existence of cookies is by simply calling print_r($_COOKIE);.
• Cookies must be deleted with the same parameters as they were set with. If the value argument is an empty string, or FALSE, and all other arguments match a previous call to setcookie, then the cookie with the specified name will be deleted from the remote client. This is internally achieved by setting value to 'deleted' and expiration time to one year in past.
• Because setting a cookie with a value of FALSE will try to delete the cookie, you should not use boolean values. Instead, use 0 for FALSE and 1 for TRUE.
• Cookies names can be set as array names and will be available to your PHP scripts as arrays but separate cookies are stored on the user's system. Consider explode() to set one cookie with multiple names and values. It is not recommended to use serialize() for this purpose, because it can result in security holes.

PHP cookie value not being passed from one page to another

Answering my own question. Turns out there were 3 major problems with my code.

1) I was trying to set the cookie value by doing this:

$_COOKIE['cookie[loggedin]'] = FALSE;

Turns out one needs to use setcookie() to set the cookie value. Assigning a new value to $_COOKIE will change the value of that variable (within the scope of the same page), but it won't change the value inside the cookie (outside the scope of that page, calling $_COOKIE will yield the value stored in the cookie).

2) The following is incorrect

echo "cookievalue" . $_COOKIE['cookie[loggedin]'] . '<br>';

Instead it should be

echo "cookievalue" . $_COOKIE['cookie']['loggedin'] . '<br>';

3) Cookie necessarily has to be passed a string value. I was trying to pass a value = FALSE which is not a string. Instead, I could have correctly passed a value = 'FALSE'

PHP – setcookie() not working

PHP superglobals are populated at script start-up time, and then are NOT modified or touched by PHP again for the life of the script. That means $_COOKIE represents the cookies that were sent to the server in the http request that fired up the script. It will NOT show any cookies you've added/changed/deleted during the life of the script. Those changes will only show up on the NEXT request.

The only exception to this is $_SESSION, which is populated when you call session_start().

If you need those values to be in $_COOKIE immediately, you'll have to add them manually, e.g.

setcookie('cookie', $value, ....);
$_COOKIE['cookie'] = $value;

PHP: Can't Set Cookie

According to the php reference, the correct way to use the setcookie function is

bool setcookie ( string $name [, string $value [, int $expire = 0 [, string $path [, string $domain [, bool $secure = false [, bool $httponly = false ]]]]]] )

Didn't you swaped the $path and $domain argument?

Try

setcookie("remember", $name, $time, '/', 'www.domain.com');

Cookies not set using PHP setcookie function

Make sure you have a domain that is known by both server and client. echo $_SERVER['HTTP_HOST'] should tell you the exact same domain that your browser has. If not, cookie will not be accepted by the browser.

Make sure your server and client time is perfectly correct. Browser will reject a cookie with a wrong datetime.

Do not write any other code and just do:

<?php
$cookie_name = "user";
$cookie_value = "John Doe";
setcookie($cookie_name, $cookie_value, time() + (86400 * 30), "/"); // 86400 = 1 day 
// expiration
echo date("H:i:s d.m.Y")."<br>";
echo $_SERVER['HTTP_HOST']."<br>";
var_dump($_COOKIE);
?>

and refresh the page twice.

Also check out manual at: https://www.php.net/manual/en/features.cookies.php

Can't access existing php cookie

See this issue:
Cookies on localhost with explicit domain

Domain names in a cookie must contain two dots. Localhost therefor is invalid.

---

Related Topics