phprados update

[Wido den Hollander <wido@widodh.nl>]

Hi,

Some time ago the API of librados changed thus breaking phprados. I 
tried implementing the C++ API of librados in PHP but I got pretty stuck 
there with the new IoCTX stuff.

So I went to the C API and started implementing a C-only phprados with 
just using the C functions.

I just finished with implementing most of the librados functionality, 
this includes:

* Connecting
* Creating and removing pools
* Object handling like write and read
* Xattr handling
* Snapshot handling

I stayed away from the rados tmap's, exec and async writes for now, 
since I don't think a lot of PHP users will be using that functionality 
(yet).

My next steps are to hunt down some bugs and start writing a OOP based 
version in PHP, but I'll be using the internal object methods of PHP for 
this while calling the C functions of librados in the background.

This way I can create a RADOS object in PHP which meets the "standard" 
of what PHP users are used to. For example: It is not common in PHP to 
define the number of bytes you want to read when retrieving the value of 
a xattr, PHP should figure that out for you.

Streamwrappers are something I'm also working on, for example:

<?php
mkdir("rados://pool1");
?>

<?php
file_get_contents("rados://pool1/object1");
?>

<?php
file_put_contents("rados://pool1/object1", "some string");
?>

phprados can be found at: http://www.widodh.nl/git/phprados.git

Or you can download it at: 
http://zooi.widodh.nl/ceph/phprados/phprados_latest.tar.gz

I also updated the Wiki: http://ceph.newdream.net/wiki/Phprados

Any comments or suggestions on this?

Wido