   #PHP Manual Session handling functions session_module_name
   session_regenerate_id

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                                 session_name

   (PHP 4 )
   session_name -- Get and/or set the current session name

Description

   string session_name ( [string name])

   session_name() returns the name of the current session. If name is
   specified, the name of the current session is changed to its value.

   The session name references the session id in cookies and URLs. It
   should contain only alphanumeric characters; it should be short and
   descriptive (i.e. for users with enabled cookie warnings). The session
   name is reset to the default value stored in session.name at request
   startup time. Thus, you need to call session_name() for every request
   (and before session_start() or session_register() are called).

   Example 1. session_name() examples
   <?php
   /* set the session name to WebsiteID */
   $previous_name = session_name("WebsiteID");
   echo "The previous session name was $previous_name<p>";
   ?>

   See also the session.name configuration directive.
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