PHP Session Behavior

You can alter PHP's default session-handling behavior.

The php.ini file contains several configuration directives that you can alter:

Directive	Description
session.cookie_lifetime	How long the session cookie should last for (in seconds). The default is zero, which expires the cookie when the browser is quit.
session.cookie_path	The path field for the session cookie. Defaults to "/" which means the entire site.
session.cookie_domain	The domain field for the session cookie. Defaults to "" which means the current server.
session.cookie_httponly	The HttpOnly field for the session cookie. Defaults to false.
session.auto_start	Defaults to false . Change it to true , and PHP automatically starts a session the moment your script starts executing saving you from calling session_start().

You can either alter these directives directly in your php.ini file, or you can set them on a per - script basis using the ini_set() PHP function:


<?PHP
ini_set( "session.cookie_lifetime", 1200 );  
// Set session timeout to 20  minutes  
?>