PHP API查询数据

[py520]

$neb = new Neb(new HttpProvider("https://testnet.nebulas.io"));
$api = $neb->api;  
上面这两句能打印出来
   echo $api->getNebState(), PHP_EOL;     从这里开始就输出没有东西了，这是为什么，
    $resp = $api->getAccountState("n1H2Yb5Q6ZfKvs61htVSV4b1U2gr2GA9vo6");
   $respObj = json_decode($resp);
   var_dump($respObj);die;
   $nonce = $respObj->result->nonce;
    $resp = $api->call("n1JmhE82GNjdZPNZr6dgUuSfzy2WRwmD9zy",
"n1JmhE82GNjdZPNZr6dgUuSfzy2WRwmD9zy",
"100000",
$respObj->result->nonce + 1,
"200000",
"200000");