Quoted from http://php.net/docs.php:
Documentation
The PHP Manual is available online in a selection of languages. Please pick a language from the list below.
You can learn how to integrate our online manual with various tools, including your web browser, on our quick reference tips page. You can also get more information about php.net URL shortcuts by visiting our URL howto page.
Note, that many languages are just under translation, and the untranslated parts are still in English. Also some translated parts might be outdated. The translation teams are open to contributions.
