session_id
Name
session_id — Gets or sets session ID.
Synopsis
string session_id
([session]);
string session (optional):
Session ID
Returns
Session ID; FALSE on error
Description
Gets or sets the session ID. If you're not using your own
session handlers, it's a good idea to let PHP take care
of it for you. You can also retrieve the session ID using
the SID constant. This can be used to append the session
ID to URLs, although this can be automated by compiling
PHP with transparent session support. Transparent session
support has a performance hit, however, so should be used
with care.
Version
Existing since version 4.0
Example
Example 1159. Show session
ID
session_start();
if (!$counter) {
session_register("counter");
}
echo session_id();
PHP Functions Essential Reference. Copyright © 2002 by New Riders Publishing
(Authors: Zak Greant, Graeme Merrall, Torben Wilson, Brett Michlitsch).
This material may be distributed only subject to the terms and conditions set forth
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http://www.opencontent.org/openpub/).
The authors of this book have elected not to choose any options under the OPL. This online book was obtained
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and is designed to provide information about the PHP programming language, focusing on PHP version 4.0.4
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