Unable to load dynamic library '/usr/lib/php5/20100525/couchbase.so' - undefined symbol: php_json_decode
I just followed all the steps to install CB 2.0.0 server and PHP SDK  but I get this error:
Warning: PHP Startup: Unable to load dynamic library '/usr/lib/php5/20100525/couchbase.so' - /usr/lib/php5/20100525/couchbase.so: undefined symbol: php_json_decode in Unknown on line 0 PHP 5.4.6-1ubuntu1.2 (cli) (built: Mar 11 2013 14:57:54) Copyright (c) 1997-2012 The PHP Group Zend Engine v2.4.0, Copyright (c) 1998-2012 Zend Technologies with Xdebug v2.2.1, Copyright (c) 2002-2012, by Derick Rethans
I tried to load json.so but there is no JSON extension available for PHP (I think it is built-in since PHP 5.2.0).
I am on Kubuntu 12.10, CB server is running fine. I added SDK repo for Ubuntu 12.04  (newer not available), all packages install just fine.
BTW, it would be great if we could simply use
pear install couchbase.