How can PHP developers securely pass variables between PHP scripts without using URL parameters like $_GET['f']?

When passing variables between PHP scripts, using URL parameters like $_GET['f'] can pose security risks as the data is visible in the URL. To securely pass variables, developers can use sessions or POST requests to transmit data between scripts without exposing it in the URL. 

// Sender script
session_start();
$_SESSION['variable_name'] = $variable_value;

// Receiver script
session_start();
$received_variable = $_SESSION['variable_name'];

Keywords

PHP security variables session encryption

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