Is storing all $_POST data in $_SESSION variables a recommended approach in PHP?

Storing all $_POST data directly in $_SESSION variables is not a recommended approach as it can lead to security vulnerabilities such as session fixation attacks or excessive memory usage. It is better to only store specific data from $_POST that needs to persist across multiple pages in the session. 

// Only store specific $_POST data in $_SESSION
if(isset($_POST['username'])) {
    $_SESSION['username'] = $_POST['username'];
}

if(isset($_POST['email'])) {
    $_SESSION['email'] = $_POST['email'];
}

Keywords

$_POST $_SESSION data storage security PHP

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