Update PHP.net documentation

[DomBlack]

The PHP.net documentation is out of date against the current API.

For example; http://php.net/manual/en/memcached.get.php doesn't mention the new way of getting CAS tokens.

[martin-georgiev]

I've just submitted a patch on edit.php.net for the Memcached PHP documentation, reflecting the API changes in get, getByKey, getMulti and getMultiByKey.
This should be reviewed soon.

[sodabrew]

Thanks @martin-georgiev! Hope that the changes are accepted to the documentation site soon.

[martin-georgiev]

The php.net documentation is now updated.
The updated pages are:
Constants
Memcached::get
Memcached::getByKey
Memcached::getMulti
Memcached::getMultiByKey

Let me know of anything missing. Otherwise, I believe this issue can be closed.