The HTTP status query on the page is as follows. The purpose is to speed up the CDN. The CDN side can say the Set-Cookie in the U-turn message.
Return Status Code: 200
HEAD information returned by the webpage is as follows
Date: Mon, 03 Mar 2014 09:02:08 GMT
Server: Apache/2.2.22 (Win64) PHP/5.4.3
Set-Cookie: PHPSESSID=assum1ediernlvg12ao3cf2ha2; path=/
Expires: Mon, 03 Mar 2014 12:02:08 GMT
Last-Modified: Sat, 01 Mar 2014 13:34:36 GMT
Keep-Alive: timeout=5, max=100
Content-Type: text/html; charset=utf-8
Tp default convention configuration, there is such a line:
/* SESSION settings */ SESSION_AUTO_START' => true, // whether to open session automatically
The session is automatically started by default.
Php’s session sends sess id as a cookie to the user agent by default.