How can PHP sessions be used to transfer variables between different PHP files?

To transfer variables between different PHP files using PHP sessions, you can set the variables in one file using the $_SESSION superglobal and then access them in another file by starting the session and retrieving the variables from the session array. 

// File 1: setting session variable
session_start();
$_SESSION['username'] = 'John';

// File 2: accessing session variable
session_start();
echo $_SESSION['username']; // Output: John

Keywords

PHP sessions variable transfer session variables session_start() $_SESSION

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