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[edit] Last updated: Fri, 26 Apr 2013

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$_COOKIE

$HTTP_COOKIE_VARS [deprecated]

(PHP 4 >= 4.1.0, PHP 5)

$_COOKIE -- $HTTP_COOKIE_VARS [deprecated] — HTTP Cookies

Description

An associative array of variables passed to the current script via HTTP Cookies.

$HTTP_COOKIE_VARS contains the same initial information, but is not a superglobal. (Note that $HTTP_COOKIE_VARS and $_COOKIE are different variables and that PHP handles them as such)

Changelog

Version Description
4.1.0 Introduced $_COOKIE that deprecated $HTTP_COOKIE_VARS.

Examples

Example #1 $_COOKIE example

<?php
echo 'Hello ' . htmlspecialchars($_COOKIE["name"]) . '!';
?>

Assuming the "name" cookie has been set earlier

The above example will output something similar to:

Hello Hannes!

Notes

Note:

This is a 'superglobal', or automatic global, variable. This simply means that it is available in all scopes throughout a script. There is no need to do global $variable; to access it within functions or methods.



add a note add a note User Contributed Notes $_COOKIE - [2 notes]
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2
Chris Watson
3 years ago
The value of $_COOKIE is determined by the content of cookies received in the user agent's request.

If you set a cookie (ie send it to the browser), it won't be sent back until the next request and so the data won't be present in $_COOKIE.
up
1
Sam Yong - hellclanner at live dot com
3 years ago
Take note that in IE when it's really weird that when you do something like this:

<?php

// import config/constants

session_set_cookie_params((time()+$_SITE['session_length']));
session_start();
$sess = session_name();
setcookie($sess, $_COOKIE[$sess], time() + $_SITE['session_length']);

// .. rest of the code

?>

It fails. the session cookie is not stored totally.

Instead, doing this would work:

<?php

// import config/constants

session_set_cookie_params((time()+$_SITE['session_length']));
session_start();
$sess = session_name();
setcookie($sess, session_id(), time() + $_SITE['session_length']);

// .. rest of the code

?>
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