Headers provides a description of the file and it should usually include Copyright, Filename, Author, License.
Example of a standard header,
Example of a standard header,
Code
/*-------------------------------------------------------+
| PHPFusion Content Management System
| Copyright (C) PHP Fusion Inc
| https://phpfusion.com/
+--------------------------------------------------------+
| Filename: Filename.php
| Author: PHPFusion Development Team
+--------------------------------------------------------+
| This program is released as free software under the
| Affero GPL license. You can redistribute it and/or
| modify it under the terms of this license which you
| can read by viewing the included agpl.txt or online
| at www.gnu.org/licenses/agpl.html. Removal of this
| copyright header is strictly prohibited without
| written permission from the original author(s).
+--------------------------------------------------------*/