| Version | 3.01 |
|---|---|
| Publisher | The PHP Group |
| DFSG compatible | ? |
| Free software | Yes[1] |
| OSI approved | Yes[2] |
| GPL compatible | No[1] |
| Copyleft | No[1] |
The PHP License is the software license under which the PHP programming language is released. The PHP License is a non-copyleft free software license according to the Free Software Foundation[1] and an open source license according to the the Open Source Initiative.[2] The license is GPL-incompatible due to restrictions on the usage of the term PHP.[1]
Contents |
Terms
The PHP License is an open source license designed to encourage widespread adoption of the source code. Redistribution is permitted in source or binary form with or without modifications provided that:
- The PHP License copyright statement is included;
- The word "PHP" is not included in the title of any derivative works;
- The following acknowledgment is included in whatever form the code is redistributed under:
This product includes PHP, freely available from http://www.php.net/
Version 3 of PHP used a dual license - PHP 3's source is available under either the PHP License or the GNU General Public License (GPL). This practice was discontinued as of PHP 4, with PHP's developers citing the restrictions on reuse associated with the GPL's copyleft enforcement as being the reason for dropping it.[3]
References
- ^ a b c d e "GPL-Incompatible, Free Software Licenses". Various Licenses and Comments about Them. Free Software Foundation. http://www.fsf.org/licensing/licenses/index_html#GPLIncompatibleLicenses.
- ^ a b "OSI-approved licenses by name". Alphabetized list of open source licenses approved by the Open Source Initiative (OSI). http://www.opensource.org/licenses/alphabetical.
- ^ "Why is PHP 4 not dual-licensed under the GNU General Public License (GPL) like PHP 3 was?". PHP: License Information FAQ. PHP.net. http://www.php.net/license/.
See also
External links
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