Warum lässt die readfile-Funktion keine $_SESSION-Abfrage zu?

The readfile function in PHP does not allow direct access to session variables ($_SESSION) because it operates at a lower level than the session handling functions. To access session variables within the readfile function, you can first store the session variable in a regular variable and then use that variable in the readfile function. 

<?php
// Start the session
session_start();

// Store the session variable in a regular variable
$filename = $_SESSION['filename'];

// Use the regular variable in the readfile function
readfile($filename);
?>

Keywords

readfile $_SESSION function PHP error

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