Hi. I would like to know how the developers or the developer created WordPress? I mean was he relied on PHP and MySQL only? or are there other tools? And what is the philosophy behind it? I mean when people download and install wordpress, will they be able to look at the whole code of this application?
Yes. I guess it’s like most devices—a car, for example. You can buy it, pull it apart, see how it works and (theoretically) create your own on the basis of this. WordPress is ‘open source’, which is basically what this means. Of course, it would be silly to copy their work and then try to sell it as your own…
WP is GNU open source so you can view and edit the source to create your own version of WP based on it if you wish. The GNU license requires you to license your own code (build from the WP base) in the same way.