跨子域的Codeigniter会话

问题描述：

I have multiple subdomains and i'm trying to use the sessions across subdomains.

http://example.com
http://subdomain.example.com

I have also set the cookie domain in config.php

$config['cookie_domain'] = ".example.com";

The session userdata and also flashdata are empty when used in the other domain. Im using the same session table as well for both CI instance

我有多个子域，我正在尝试跨子域使用会话。 p>

  http：//example.com 
http：//subdomain.example.com 
  code>  pre> 
 
 我还在config中设置了cookie域。  php  p> 
 
 
  $ config ['cookie_domain'] =“。example.com”; 
  code>  pre> 
 
 会话用户数据 在其他域中使用时，flashdata也是空的。 我同时使用相同的会话表用于CI实例 p> 
  div>

答

From the following solution : Sharing sessions

Both the cookie_domain and cookie prefix has to be set

$config['cookie_domain'] = ".example.com";
$config['cookie_prefix'] = "example_";

答

first floor is right ,but does not clearly the reason

Reasons: from: https://ellislab.com/forums/viewthread/131851/#651233

CI’s session, like any other session mechanism, uses a cookie to identify the session. It’s is the cookie that should be available cross-domain.

For domain, you need to specify ‘.domain.com’, not ‘*.domain.com’.

答

Only $config['cookie_domain'] part is required, $config['cookie_prefix'] is only to make things clean or you have some sub domain uses same domain but does not wanted to be shared.

跨子域的Codeigniter会话

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