Ref WebmasterWorld PHP forum:
http://www.webmasterworld.com/php/3911659.htm
array ( 'data' => array ( ), 'nextline' => NULL, 'ignore_product' => 'none', 'extractrls' => 'block', 'colour' => NULL, 'shape' => NULL, 'weight' => NULL, )
a:7:{s:4:"data";a:0:{}s:8:"nextline";N;s:14:"ignore_product";s:4:"none";s:10:"extractrls";s:5:"block";s:6:"colour";N;s:5:"shape";N;s:6:"weight";N;}