addmultisigaddress

[lorenzoasr]

Hello, I have some difficult to get command "addmultisigaddress" working.

From help:
Examples:

Add a multisig address from 2 addresses

bitcoin-cli addmultisigaddress 2 "["16sSauSf5pF2UkUwvKGq4qjNRzBZYqgEL5","171sgjn4YtPu27adkKGrdDwzRTxnRkBfKV"]"

As json rpc call

curl --user myusername --data-binary '{"jsonrpc": "1.0", "id":"curltest", "method": "addmultisigaddress", "params": [2, "["16sSauSf5pF2UkUwvKGq4qjNRzBZYqgEL5","171sgjn4YtPu27adkKGrdDwzRTxnRkBfKV"]"] }' -H 'content-type: text/plain;' http://127.0.0.1:8332/

I tried this:
$data = Array("firstAddress","secondAddress");
$client->query("addmultisigaddress",2,json_encode($data));

But in the response tcpdumped it says command is malformed, I tried in every way but I havn't success, can you help me?

Thank you