note 41506 added to opl.license

First of all, this sounds rather inane to ask here, but what license is PHP actually distributed under? is it GNU GPL? is it BSD? other? I'm also curious about a few licensing issues. If i write a library of functions, objects, etc, for use as part of PHP applications (web or server), similar to something like PEAR or whatever, the code that i write it in obviously by necessity being written in PHP, do i have to distribute/publish that library under the same terms of license as PHP itself is distributed? and do i have to distribute PHP along with it? In other words, is a program/script written IN the language that the PHP engine interprets considered a derivative work of PHP? what if I was compiling the PHP using the Zend engine? would that have to be distributed under the same terms as the Zend engine? OR, as I am hoping, is a derivative work of PHP only considered something written to modify the PHP engine itself, such as an extension, a revision of the Zend engine, the module that Apache loads PHP with, etc etc? (and as a side note, did I violate licensing issues or copyrights by using the terms PHP, Zend, etc in this post?) ---- Manual Page -- http://www.php.net/manual/en/opl.license.php Edit -- http://master.php.net/manage/user-notes.php?action=edit+41506 Delete -- http://master.php.net/manage/user-notes.php?action=delete+41506&report=yes Reject -- http://master.php.net/manage/user-notes.php?action=reject+41506&report=yes Search -- http://master.php.net/manage/user-notes.php