PHP extensions

What exactly is a PHP extension made with? ie. mysql, GD
is it programmed in c?
Can you make your own?

Yes, they are programmed in C - although an extension could use C++ if the author wanted.

Yes, you can make your own. Refer to the manual:

Although some of the extensions / Zend documentation is somewhat out of date.

(Note that a lot of people refer to the Zend Accelerator as "Zend", where as Zend is really the engine which is built into PHP).

Mark

cool, thanks for the extra speedy reply.

I'm curious about this and for some reason i want to make one... i want to know what cool stuff i can make into an extension. lol.

Could you theoretically make your website a DLL? hmm sorry, hypothetical thinking. I'll research.

Also, I believe that most PEAR (PHP Extension and Application Repository) packages are written in PHP.

I see, thats interesting. I've been doing a bit of reading, I keep comming accross instructions like this;

How to build:

$ phpize
$ ./configure –enable-hello
$ make

Where/Slash how do you do that? lol. Is that linux commands or what?

I guess I might write a function later for fun! haha