How to define datadir from PHP JSON RPC

[mombay]

Hey everyone,

I want to know how to define datadir on bitcoind from PHP JSON RPC ?

Code:

bitcoind -datadir=$HOME/.bitcoin

I tried like this but no result:

Code:

$bitcoin = new jsonRPCClient('http://'.json_username.':'.json_password.'@'.json_server.':'.json_port.'/');
$bitcoin->datadir = "$HOME/.bitcoin";

But no result

Please give me an idea about this, thank you so much.

TH GOAL IS TO USE TWO WALLETS IN THE SAME SERVER

[grue]

datadir must be set from command line at startup.

[Dare]

datadir must be set from command line at startup.

To clarify: you'll need two instances of bitcoind running on the server independently of your PHP script, each started with different "-datadir" arguments. You will need to bind one instance to a separate port as well in order to access them independently (without this, the second instance may fail to start).