Please provide PHP example for eth_sendRawTransaction

Question

I wish to have a PHP script use Infura's endpoint to call eth_sendRawTransaction. I have a PHP script which uses curl to call functions through Infura's endpoint, like eth_getBalance.

I use BlockCypher's "signer" program to sign data at BlockCypher.

The following description of eth_sendRawTransaction does not indicate how to create the signed transaction data, here.

Please provide a snippet of PHP code which exemplifies how to create the signed transaction data. At the place where the data needs to be signed, just use this line of code:

$sSignature = exec("./signer $sToSign $sPrivateKey");

I'm sure many other people will benefit from this example.

Answer 1

Consider looking into one of the PHP libraries that is a wrapper for the JSON-RPC.

PHP Library for Ethereum

Answer 2

You should use web3.js

I love PHP but it really suck with geth, geth itself hard and documentation sporadic and peoples know fews. I really got stuck building my whole app on php (generate wallet on register) then integrate web3.js in. Better you use only JS, a good example of a fabulous code is myetherwallet

From official web3.js doc:

https://github.com/ethereum/wiki/wiki/JavaScript-API#web3ethsendrawtransaction

var Tx = require('ethereumjs-tx');
var privateKey = new Buffer('e331b6d69882b4cb4ea581d88e0b604039a3de5967688d3dcffdd2270c0fd109', 'hex')

var rawTx = {
  nonce: '0x00',
  gasPrice: '0x09184e72a000', 
  gasLimit: '0x2710',
  to: '0x0000000000000000000000000000000000000000', 
  value: '0x00', 
  data: '0x7f7465737432000000000000000000000000000000000000000000000000000000600057'
}

var tx = new Tx(rawTx);
tx.sign(privateKey);

var serializedTx = tx.serialize();

//console.log(serializedTx.toString('hex'));
//f889808609184e72a00082271094000000000000000000000000000000000000000080a47f74657374320000000000000000000000000000000000000000000000000000006000571ca08a8bbf888cfa37bbf0bb965423625641fc956967b81d12e23709cead01446075a01ce999b56a8a88504be365442ea61239198e23d1fce7d00fcfc5cd3b44b7215f

web3.eth.sendRawTransaction('0x' + serializedTx.toString('hex'), function(err, hash) {
  if (!err)
    console.log(hash); // "0x7f9fade1c0d57a7af66ab4ead79fade1c0d57a7af66ab4ead7c2c2eb7b11a91385"
});