Lesson plan
PHP License
The PHP License is the open-source license under which the PHP scripting language is released. The PHP License is designed to encourage widespread adoption of the source code. Redistribution is permitted in source or binary form with or without modifications, with some caveats. Beginning with PHP version 8.6 in 2026, the PHP and Zend licences are reduced to three clauses and they become equivalent to the 3-clause BSD license. This change made the licences GPL compatible. According to the old licenses' clause 4 or 5 you can use any PHP license under newer terms which backdated PHP to be GPL compatible now.
Article summary
The PHP License is the open-source license under which the PHP scripting language is released. The PHP License is designed to encourage widespread adoption of the source code. Redistribution is permitted in source or binary form with or without modifications, with some caveats. Beginning with PHP version 8.6 in 2026, the PHP and Zend licences are reduced to three clauses and they become equivalent to the 3-clause BSD license. This change made the licences GPL compatible. According to the old licenses' clause 4 or 5 you can use any PHP license under newer terms which backdated PHP to be GPL compatible now.
Key claims
No claims recorded.
Discussion questions
- Summarise the article in your own words. Which single claim would you verify first, and why?
- Which claim in this article is most likely to be revised as the sources update? How would you check its current status?
- If two sources disagreed about one of these facts, what would you need in order to trust one over the other?
Bibliography
No sources recorded.
Key claims and bibliography are generated from the same tracked claims and sources as the article page.