trying to get text of a field in json rpc 2.0 response into ar PHP variable I use json_decode to vardump a return which yields

array(3) { ["jsonrpc"]=> string(3) "2.0" ["result"]=> array(13) { ["status"]=> string(7) "Pending" ["amount (BTC)"]=> string(10) "0.05130899" ["index_url"]=> . . . . [more fields  here] . . .  ["address"]=> string(34) "1GHHojoC4Ai1SPMN3YoNzemLNaaj2XFHKc" 

I am trying to fill a variable with the text from the "address" field and I tried 

$result =  json_decode($response, true);
   $address = $result->address;

but a varbump of $addrwss is NULL

any other variant like $result->"address" or $result->["address"] is improper syntax

Can someone tell me how to get at the text of the address field of a JSON PRC 2.0 response to put it in a variable in PHP
To get the address you would do:    

$result = json_decode($response, true);
$address = $result["result"]["address"];