setcookie不会使用标题重定向？

Question

我尝试设置Cookie并使用标头重定向。但cookie没有设置。我试过了print_r($_COOKIE)。那么，我确定cookie没有在那个地方设置？

setcookie("re",$re);

header('Location: ' . $_SERVER['HTTP_REFERER']);

Answer 1

您需要设置我订购的路径，以使其在所有域中可用...

根据文件

The path on the server in which the cookie will be available on. 
If set to '/', the cookie will be available within the entire domain. 
If set to '/foo/', the cookie will only be available within the /foo/ 
 directory and all sub-directories such as /foo/bar/ of domain. 
The default value is the current directory that the cookie is being set in. 

试试这个

 <?php
  setcookie("re",$re,0,'/');
  header('Location: ' . $_SERVER['HTTP_REFERER']);
?>

注意：引用者应来自您的域名