How long does sessions last?
How long does a session last? By default, a session lasts until there’s 30 minutes of inactivity, but you can adjust this limit so a session lasts from a few seconds to several hours. Learn more about adjusting session settings.
PHP Create/Retrieve a Cookie
The cookie will expire after 30 days (86400 * 30). The “/” means that the cookie is available in entire website (otherwise, select the directory you prefer).
What is a PHP session?
A PHP session is used to store data on a server rather than the computer of the user. Session identifiers or SID is a unique number which is used to identify every user in a session based environment.
How many sessions can PHP handle?
1000+ sessions can still be perfectly handled by standard PHP file based sessions. If you notice that is getting a problem, you can exchange the session backend easily. There are pluggable session handlers for memcached or other memory or database based storage systems.
What is an average session duration?
Average Session Duration measures the average amount of time spent on your website. It is calculated by dividing total time spent across sessions by the total number of sessions.
Setting Cookie In PHP: To set a cookie in PHP,the setcookie() function is used. The setcookie() function needs to be called prior to any output generated by the script otherwise the cookie will not be set. Syntax : setcookie(name, value, expire, path, domain, security);
Accessing Cookies Values
The PHP $_COOKIE superglobal variable is used to retrieve a cookie value. It typically an associative array that contains a list of all the cookies values sent by the browser in the current request, keyed by cookie name.
What is PHP Session_start () and session_destroy () function?
session_destroy() destroys all of the data associated with the current session. It does not unset any of the global variables associated with the session, or unset the session cookie. To use the session variables again, session_start() has to be called. Note: You do not have to call session_destroy() from usual code.
Why session is used in PHP?
Sessions are a simple way to store data for individual users against a unique session ID. This can be used to persist state information between page requests. Session IDs are normally sent to the browser via session cookies and the ID is used to retrieve existing session data.
PHP sessions rely on a cookie containing a session key. Your session data are stored only on your server, but a unique ID is assigned to each session and that ID gets saved in a cookie.
How do I make PHP sessions last longer?
For set the time life in php, you can use the function session_set_cookie_params, before the session_start: session_set_cookie_params(3600,”/”); session_start(); For ex, 3600 seconds is one hour, for 2 hours 3600*2 = 7200.
How can I destroy a specific session in PHP?
Destroying a PHP Session
A PHP session can be destroyed by session_destroy() function. This function does not need any argument and a single call can destroy all the session variables. If you want to destroy a single session variable then you can use unset() function to unset a session variable.
How safe are PHP sessions?
Sessions are significantly safer than, say, cookies. But it is still possible to steal a session and thus the hacker will have total access to whatever is in that session. Some ways to avoid this are IP Checking (which works pretty well, but is very low fi and thus not reliable on its own), and using a nonce.