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Thread: how to check if session id has been created

  1. #1
    Join Date
    Jun 2003
    Location
    London
    Posts
    14

    how to check if session id has been created

    i want to create my own session id so i can reference it. i have the following setup:


    <?

    if (session_id()) {
    echo "session has started.";
    }
    else{
    session_start();
    $time = time();
    $date = $today = date("Ymd");
    $id = $time + $date;

    session_id($id);

    print session_id();
    echo "time = $time";
    echo "date = $date";
    }
    ?>

    This works but when i hit refresh it generates a new session, how can i check if the session id has already been made?

  2. #2
    Join Date
    Dec 2002
    Location
    High on life
    Posts
    10,104
    Try this, perhaps:

    PHP Code:
    <? 

    session_start(); 
    if (session_id()) { 
        echo "session has started."; 

    else { 
        $time = time(); 
        $date = $today = date("Ymd"); 
        $id = $time + $date; 

        session_id($id); 

        print session_id(); 
        echo "time = $time"; 
        echo "date = $date"; 

    ?>

    Personal website http://www.ryanbrill.com/
    Business website: http://www.infinitywebdesign.com/
    TypeSpace http://www.typespace.org/

    I reject your reality and substitute it with my own!

  3. #3
    Join Date
    May 2003
    Location
    Bournemouth, UK
    Posts
    34
    To test whether the session exists,

    if ($PHPSESSID) print "session exists";
    else print "session does not exist";

  4. #4
    Join Date
    Dec 2002
    Location
    High on life
    Posts
    10,104
    I wouldn't use global variables... Reference the session like this:

    $_SESSION["sessionid"]; #for PHP 4.1.0 and higher

    $HTTP_SESSION_VARS["sessionid"] #for lower than PHP 4.1.0

    Personal website http://www.ryanbrill.com/
    Business website: http://www.infinitywebdesign.com/
    TypeSpace http://www.typespace.org/

    I reject your reality and substitute it with my own!

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