The default value is actually 24 minutes seconds. It is determined by the session. This discussion thread is closed Start new discussion. How long do Session variables last before timing out? Shared Variable Vs. Session Variable. NET cookieless session timeout. Visual Basic. Question about Session variables and Redirects. Session Variables dissapears Microsoft Excel.
How to implement control array with vba. Data Scientist vs Software Engineer. Career Advice. Do you think a 50 year old male with no degree can still become a coder? It then sets the session variables—color, size, and shape—to be red, small and round respectively.
It's best to just put it directly after. The session sets a tiny cookie on the user's computer to serve as a key. It is only a key; no personal information is included in the cookie. The web server looks for that key when a user enters the URL for one of its hosted websites. If the server finds the key, the session and the information it contains is opened for the first page of the website.
If the server does not find the key, the user proceeds to the website, but the information saved on the server is not passed on to the website. Note that the values for the variables are not specified in the code. Call this code mypage2. Another way to show this is to run this code:. You can also store an array within the session array. Go back to our mypage. Now let's run this on mypage2. This code demonstrates how to edit or remove individual session variables or the entire session.
To change a session variable, you just reset it to something else by typing right over it. By default, a session lasts until the user closes his browser.
This option can be changed in the php. Actively scan device characteristics for identification. If a user doesn't log out his account and then comes back after days, even then he should appear logged in. I have found some examples where they have increased the time for a session to expire but I want that it should only expire on the log out event by the user irrespective of the time he took to log out.
Also note that with "normal" sessions, the cookie containing the session id will be deleted when the user closes his browser -- so, he will be disconnected, no matter how long the session's lifetime is. With the solution I propose, you are the one who sets up how long the cookie should remain on the user's computer ;-. It means, though, that when a user manually logs-out, you have to delete both his session and the cookie, of course -- so he's not immediatly re-auto-logged-in.
Of course, you have to be careful about what you set in the cookie: a cookie is not quite secure, so don't store a password in it, for instance ;-. Actually, this way of doing things is how the "remember me" feature often works; except, here, your users will not have to check a checkbox to activate "remember me" ;-. If you don't have the time to develop that kind of stuff, a pretty quick and dirty way is to use some Ajax request on all your pages, that will just "ping" a PHP page on the server -- this will keep the session active but it's not quite a good way of doing things: you'll still have LOTS of sessions on the server, you'll have lots of useless requests Session should never expire by itself.
0コメント