Php session timeout

In PHP, sessions are maintained to check if the user is active. When the user becomes inactive and the user forgets to logout from the web page, there is a chance of other users viewing the page causing security breach.

By default, a session in PHP gets destroyed when the browser is closed. Session timeout can be customized, to make the user’s page inactive after a fixed time. 
Starting session: The PHP, session_start() function is used to start a session in the web page.
Syntax: 
 

session_start();

Session variables: After the start of the session, session variables can be created for future use.

Session variables can be created and the values can be stored in those variables as follows:
Syntax: 
 

• Creating session variable with variable name ‘var1’ and assigning the value of ‘5’ to it can be done as: 
   

$_SESSION['var1']=5;

• Assigning a variable to a session variable can be done as: 
   

$username="John"; $_SESSION['username']=$username;

Destroyin

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