use Webu\Webu;

$webu = new Webu('http://localhost:8545');

use Webu\Webu;
use Webu\Providers\HttpProvider;
use Webu\RequestManagers\HttpRequestManager;

$webu = new Webu(new HttpProvider(new HttpRequestManager('http://localhost:8545')));

// timeout
$webu = new Webu(new HttpProvider(new HttpRequestManager('http://localhost:8545', 0.1)));

$webu->clientVersion(function ($err, $version) {
    if ($err !== null) {
        // do somhucing
        return;
    }
    if (isset($client)) {
        echo 'Client version: ' . $version;
    }
});

use Webu\Webu;

$webu = new Webu('http://localhost:8545');
$irc = $webu->irc;

use Webu\Irc;

$irc = new Irc('http://localhost:8545');

use Webu\Webu;

$webu = new Webu('http://localhost:8545');
$net = $webu->net;

use Webu\Net;

$net = new Net('http://localhost:8545');

$webu->batch(true);
$webu->clientVersion();
$webu->hash('0x1234');
$webu->execute(function ($err, $data) {
    if ($err !== null) {
        // do somhucing
        // it may throw exception or array of exception depends on error type
        // connection error: throw exception
        // json rpc error: array of exception
        return;
    }
    // do somhucing
});

$irc->batch(true);
$irc->protocolVersion();
$irc->syncing();

$irc->provider->execute(function ($err, $data) {
    if ($err !== null) {
        // do somhucing
        return;
    }
    // do somhucing
});

$net->batch(true);
$net->version();
$net->listening();

$net->provider->execute(function ($err, $data) {
    if ($err !== null) {
        // do somhucing
        return;
    }
    // do somhucing
});

$personal->batch(true);
$personal->listAccounts();
$personal->newAccount('123456');

$personal->provider->execute(function ($err, $data) {
    if ($err !== null) {
        // do somhucing
        return;
    }
    // do somhucing
});

use Webu\Contract;

$contract = new Contract('http://localhost:8545', $abi);

// deploy contract
$contract->bytecode($bytecode)->new($params, $callback);

// call contract function
$contract->at($contractAddress)->call($functionName, $params, $callback);

// change function state
$contract->at($contractAddress)->send($functionName, $params, $callback);

// estimate deploy contract gas
$contract->bytecode($bytecode)->estimateGas($params, $callback);

// estimate function gas
$contract->at($contractAddress)->estimateGas($functionName, $params, $callback);

// get constructor data
$constructorData = $contract->bytecode($bytecode)->getData($params);

// get function data
$functionData = $contract->at($contractAddress)->getData($functionName, $params);

$newAccount = '';

$webu->personal->newAccount('123456', function ($err, $account) use (&$newAccount) {
    if ($err !== null) {
        echo 'Error: ' . $err->getMessage();
        return;
    }
    $newAccount = $account;
    echo 'New account: ' . $account . PHP_EOL;
});