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PHP Sessions

Learn about PHP sessions, how to store and access user information, and the important functions like session_start(), unset(), and session_destroy(). Master the usage of session variables in PHP applications.

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PHP Sessions

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  1. PHP Sessions • A PHP session variable is used to store information about, or change settings for a user session. • Session variables hold information about one single user, and • are available to all pages in one application.

  2. PHP Sessions • session_start() • Before you can store user information in your PHP session, you must first start up the session. • The session_start() function must appear BEFORE the <html> tag

  3. PHP Sessions • $_SESSION['views']=1; • if(isset($_SESSION['views']))$_SESSION['views']=$_SESSION['views']+1;else$_SESSION['views']=1;echo "Views=". $_SESSION['views'];

  4. PHP Sessions • unset($_SESSION['views']); • The unset() function is used to free the specified session variable • session_destroy(); • session_destroy() will reset your session and you will lose all your stored session data.

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