Ethereum Transaction Using cUrl and web3.php, I get a Receipt but the Transaction is not sent to the Network

Question

This has been doing my head in all day, after wading through and managing to get all my values converted to hex I create and sign the ethereum transaction using the web3p/ethereum-tx library from GitHub. I put in the cUrl request with the parameters to the infura mainet. I get a response with a transaction hash but when I search for it on etherscan and others it does not show up, any ideas what I'm doing wrong?

use Web3\Web3;
use Web3p\EthereumTx\Transaction;

$balance = bcdiv($balanceInWei, "1000000000000000000", 18);
$gasTotal = 4000000000 * 21004;
$value = bcsub($balanceInWei, $gasTotal);
$gas = dechex(21004);
$gasPrice = dechex(4000000000);

function bcdechex($dec) {
$hex = '';
do {    
$last = bcmod($dec, 16);
$hex = dechex($last).$hex;
$dec = bcdiv(bcsub($dec, $last), 16);
} while($dec>0);
return $hex;
}

$hexValue = bcdechex($value);
$nonce = time();
$hexNonce = dechex($nonce);

echo $wallet_address;
  // with chainId
  $transaction = new Transaction([
      'nonce' => '0x'.$hexNonce,
      'from' => $wallet_address,
      'to' => '0xMyWalletAddress',
      'gas' => '0x'.$gas,
      'gasPrice' => '0x'.$gasPrice,
      'value' => '0x'.$hexValue,
      'chainId' => 1,
      'data' => '0x0'
  ]);
  $signedTransaction = $transaction->sign($databaseContainer->private_key);

  $url = "https://mainnet.infura.io/v3/MyApiKey";
  $data = array(
          "jsonrpc" => "2.0",
          "method" => "eth_sendRawTransaction",
          "params" => array("0x".$signedTransaction),
          "id" => 1
  );
  $json_encoded_data = json_encode($data);

  var_dump($json_encoded_data);

  $ch = curl_init($url);
  curl_setopt($ch, CURLOPT_CUSTOMREQUEST, "POST");
  curl_setopt($ch, CURLOPT_POSTFIELDS, $json_encoded_data);
  curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
  curl_setopt($ch, CURLOPT_HTTPHEADER, array(
          'Content-Type: application/json',
          'Content-Length: ' . strlen($json_encoded_data))
  );

  $result = json_decode(curl_exec($ch));
  curl_close($ch);
  dd($result);

dd is just me dumping the result in larvel. Thanks in advance.

Answer 1

It looks to me that your nonce is not right. Nonce should be an incrementing transaction counter, not derives from unixtimestamp. Also it seems you are missing gasLimit parameter?