HelloWorld sample code broken for php SDK

Please route to the php SDK dev team.

If you follow the instruactions, and take the sample Hello World code for the php SDK from:
http://developer.couchbase.com/documentation/server/4.0/sdks/php-2.0/hello-couchbase.html

Running this leads to an error:
tom@haswell:~/cb/code/php$ php hello-couchbase.php
PHP Notice: Trying to get property of non-object in /home/tom/cb/code/php/hello-couchbase.php on line 14
PHP Notice: Trying to get property of non-object in /home/tom/cb/code/php/hello-couchbase.php on line 14
, ABV:

It appears this can be resolved by replacing the line:
$doc = $result->value;

With the line:
$doc = json_decode($result->value);

Not sure if the format type detection is supposed to be automatically detected by JSON, but it doesn't appear to work out the box.

Version info:
PHP 5.5.9-1ubuntu4.14 (cli) (built: Oct 28 2015 01:34:46)
Copyright (c) 1997-2014 The PHP Group
Zend Engine v2.5.0, Copyright (c) 1998-2014 Zend Technologies
with Zend OPcache v7.0.3, Copyright (c) 1999-2014, by Zend Technologies

From phpinfo():
couchbase

Version => 2.1.0

libcouchbase info:

./x86_64-linux-gnu/libcouchbase.so.2
./x86_64-linux-gnu/pkgconfig/libcouchbase.pc
./x86_64-linux-gnu/libcouchbase.so.2.0.33
./x86_64-linux-gnu/libcouchbase.so
./x86_64-linux-gnu/libcouchbase_libevent.so
./php5/20121212/couchbase.so

Reporter: Tom
E-mail: tom@chaoscube.xyz