newbie zend license question

From: 7 (
Date: 12/06/04

Date: Mon, 06 Dec 2004 16:17:01 GMT

Newbie here trying out php first time.

Just haven't found a definitive answer about the true nature of
PHP license and the zend license in the short faqs at

1. Is PHP the interpreter released under an open source license?

2. And what does zend got to do with it - its not open source - i.e.
   do I need it to run a apache/php/mysql system to
   create say a wiki or an online photo album?

Basically I don't want to develop a whole buch of php thinking its oss
and then find I have to fork out for licenses.