Note that JSON supports top-level scalar values and null

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Provided by anonymous 32932 (ajf@ajf.me)

git-svn-id: https://svn.php.net/repository/phpdoc/en/trunk@331384 c90b9560-bf6c-de11-be94-00142212c4b1
Fix missingInitializer error in amqp::get()

git-svn-id: https://svn.php.net/repository/phpdoc/en/trunk@331386 c90b9560-bf6c-de11-be94-00142212c4b1