Fixed error in reference link



git-svn-id: https://svn.php.net/repository/phpdoc/en/trunk@335215 c90b9560-bf6c-de11-be94-00142212c4b1
Added a note about array to object casting



git-svn-id: https://svn.php.net/repository/phpdoc/en/trunk@335216 c90b9560-bf6c-de11-be94-00142212c4b1