$_COOKIE

$HTTP_COOKIE_VARS [已弃用]

$_COOKIE -- $HTTP_COOKIE_VARS [已弃用] — HTTP Cookies

说明

通过 HTTP Cookies 方式传递给当前脚本的变量的数组。

$HTTP_COOKIE_VARS 包含相同的信息，但它不是一个超全局变量。 (注意 $HTTP_COOKIE_VARS 和 $_COOKIE 是不同的变量，PHP 处理它们的方式不同)

更新日志

版本	说明
4.1.0	引入 `$_COOKIE`，弃用 `$HTTP_COOKIE_VARS`。

范例

注释

Note:
“Superglobal”也称为自动化的全局变量。这就表示其在脚本的所有作用域中都是可用的。不需要在函数或方法中用 global $variable; 来访问它。

参见

add a note User Contributed Notes $_COOKIE

Chris Watson 29-Sep-2009 11:18


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.

Sam Yong - hellclanner at live dot com 05-Sep-2009 01:27


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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