Php: view the ID instance of the current Session

This article mainly introduces how to view the ID of the current Session in php. the instance analyzes two common methods to obtain the ID of a session, which is of great practical value, for more information about how to view the ID of the current Session in php, see the example in this article. Share it with you for your reference. The details are as follows:

There are two ways to get the user's session id. The first is to use the session_id () function, and the other is to use the built-in constant SID. The SID contains the session id and session value.

<? Php session_start (); print (""); $ Sid = session_id (); print (" Session ID returned by session_id ():". $ sid. "\ n"); $ sid = SID; print ("Session ID returned by SID :". $ sid. "\ n"); $ mysite = $ _ SESSION ["mysite"]; print ("Value of mysite has been retrieved :". $ mysite. "\ n"); print ("\ N ");?>

I hope this article will help you with php programming.