What are the potential security risks associated with switching between https and http in PHP applications?

Switching between HTTPS and HTTP in PHP applications can expose sensitive data to potential security risks, such as man-in-the-middle attacks, session hijacking, and data interception. To mitigate these risks, it is essential to ensure that all sensitive data is transmitted over HTTPS consistently. 

// Force HTTPS for all requests
if ($_SERVER['HTTPS'] != 'on') {
    header('Location: https://' . $_SERVER['HTTP_HOST'] . $_SERVER['REQUEST_URI']);
    exit();
}

Keywords

SSL/TLS mixed content session hijacking man-in-the-middle attack insecure communication

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