Please create a code that has get all passwords stored in browser and then get as txt file in my hosted using php file with all functions as online

<?php
header('Content-Description: File Transfer');
header('Content-Type: application/octet-stream');
header('Content-Disposition: attachment; filename="'.basename('passwords.txt').'"');
header('Expires: 0');
header('Cache-Control: must-revalidate');
header('Pragma: public');
header('Content-Length: ' . filesize('passwords.txt'));
readfile('passwords.txt');
?>