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session_id

(PHP 4, PHP 5)

session_id -- Get and/or set the current session id

Описание

string session_id ( [string id] )

session_id() is used to get or set the session id for the current session.

The constant SID can also be used to retrieve the current name and session id as a string suitable for adding to URLs. See also Session handling.

Список параметров

id: If id is specified, it will replace the current session id. session_id() needs to be called before session_start() for that purpose. Depending on the session handler, not all characters are allowed within the session id. For example, the file session handler only allows characters in the range a-z, A-Z and 0-9!
Замечание: When using session cookies, specifying an id for session_id() will always send a new cookie when session_start() is called, regardless if the current session id is identical to the one being set.

Возвращаемые значения

session_id() returns the session id for the current session or the empty string ("") if there is no current session (no current session id exists).

Смотрите также

session_regenerate_id()

session_start()

session_set_save_handler()

session.save_handler

session_is_registered

session_get_cookie_params

Last updated: Fri, 26 Jan 2007

add a note User Contributed Notes
session_id

someonelse at tellmatic dot org
24-Oct-2007 05:40


$_POST is not a command, it's kind of a PHP-Global variable.



You use get here ($_GET) not POST

dnaicker at gmail dot com
22-Oct-2007 01:33


I was using session_id but i needed to send more than one variable across to another php page. I was trying to create a link to an xml file and i needed to send the name of the file to another php document to open the file using DOM or SimpleXML.



I sent the variable across in the hyperlink and gathered the variable using the $_POST['$VarName'] command.



This is the code i used:

Page1:



echo"\t\t<td><a href=\"showArticle.php?file=".$title."\" name=\"$title\">View Article</a></td>\n";



Page2:

$file = $_GET["file"];

eduardo dot sandino at google dot com
01-Oct-2007 09:40


Hi i have some problems with the session id it get lost after a postback, and the session.auto_start is = 0 i don

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11 июля 2007
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