web3 js eth.contract equivalent in PHP

Question

var Web3 = require('web3');
var web3 = new Web3();
web3.setProvider(new web3.providers.HttpProvider("http://blahblah.com:8545"));
var token = web3.eth.contract(ABI).at("x0x_contract_address")

How would this be done in PHP?

For example with the ethereum.php library I use I can do things like this:

$data = new Ethereum_Transaction($users_eth_address, "x0_eth_address, $gas, $gasPrice, $hex_balance);
$result = $ethereum->eth_sendTransaction($data);

Answer 1

btelle/ethereum-php is incomplete and outdated. Last commit is from 2015.

You might use digitaldonkey/ethereum-php

// The json file "$fileName" used is what you get when you compile a contract with Truffle.

$ContractMeta = json_decode(file_get_contents($fileName));
$contract = new SmartContract(
  $ContractMeta->abi,
  $ContractMeta->networks->{NETWORK_ID}->address,
  new Ethereum(SERVER_URL)
);
$someBytes = new EthBytes('34537ce3a455db6b')
$x = $contract->myContractMethod();
echo $x->val()

Answer 2

According to the repository

// include the class file
require 'ethereum.php';

// create a new object
$ethereum = new Ethereum('127.0.0.1', 8545);

// do your thing
echo $ethereum->net_version();

This will allow you to connect to a local Geth instance on your machine listening on port 8545.

For accessing a contract please refer to the test.php file that includes more examples of how to make use of the functions available to you.

You may find the documentation for the JSON RPC API particularly useful here. This is because the ethereum.php project is essentially just a wrapper around the Ethereum implementation running at localhost:8545.

Hope this helps.