Tolong jelaskan mengenai Pernyataan Lisensi dari Lisensi PHP

The PHP License, Apache 2.0 version

Copyright (c) 2004 The PHP Group. All rights reserved.

Redistribution and use in source and binary forms, with or without

modification, is permitted provided that the following conditions

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

3. The name "PHP" must not be used to endorse or promote products

derived from this software without prior written permission. For

written permission, please contact group@php.net.

4. Products derived from this software may not be called "PHP", nor

may "PHP" appear in their name, without prior written permission

from group@php.net.  You may indicate that your software works in

conjunction with PHP by saying "Foo for PHP" instead of calling

it "PHP Foo" or "phpfoo"

5. The PHP Group may publish revised and/or new versions of the

license from time to time. Each version will be given a

Once covered code has been published under a particular version

of the license, you may always continue to use it under the terms

of that version. You may also choose to use such covered code

under the terms of any subsequent version of the license

published by the PHP Group. No one other than the PHP Group has

the right to modify the terms applicable to covered code created

6. Redistributions of any form whatsoever must retain the following

"This product includes PHP software, freely available from

THIS SOFTWARE IS PROVIDED BY THE PHP DEVELOPMENT TEAM ``AS IS'' AND

ANY EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,

THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A

PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE PHP

DEVELOPMENT TEAM OR ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT,

INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES

(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR

SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)

HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,

STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)

ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED

OF THE POSSIBILITY OF SUCH DAMAGE.

This software consists of voluntary contributions made by many

individuals on behalf of the PHP Group.

The PHP Group can be contacted via Email at group@php.net.

For more information on the PHP Group and the PHP project,

PHP includes the Zend Engine, freely available at HTML 5 UTF-8

Lisensi PHP adalah lisensi sumber terbuka menurut Open Source Initiative, tetapi termasuk lisensi perangkat lunak bebas non-copyleft menurut Free Software Foundation. Lisensi PHP tidak kompatibel dengan lisensi GPL karena pembatasan pada penggunaan istilah PHP.