ZyXEL Communications NSA221 User Manual page 562

Appendix E Open Source Licences
PHP 4 and PHP 5 are distributed under the
This is an
The PHP license is a BSD-style license which does not have the "copyleft" restrictions associated with
GPL.
Some files have been contributed under other (compatible) licenses and carry additional requirements
and copyright information.
This is indicated in the license + copyright comment block at the top of the source file.
Practical Guidelines:
Distributing PHP
Contributing to PHP
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Copyright (c) 1999 - 2009 The PHP Group. All rights reserved.
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Redistribution and use in source and binary forms, with or without
modification, is permitted provided that the following conditions
are met:
1. Redistributions of source code must retain the above copyright
notice, this list of conditions and the following disclaimer.
2. Redistributions in binary form must reproduce the above copyright
notice, this list of conditions and the following disclaimer in
the documentation and/or other materials provided with the
distribution.
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Open Source license, certified by the Open Source Initiative.
The PHP License, version 3.01
PHP License v3.01, copyright (c) the PHP Group.
NSA221 User's Guide