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Ethereum Integration in PHP for Wallets and Transfers

#php #ethereum #web3 #blockchain

If you build backends in PHP and want to talk to Ethereum without pulling in a full Node stack, this library gives you a clean methods for the main functionality: wallet management, ETH transfers (legacy and EIP‑1559), balances, transaction queries, and utilities.

GitHub: Edgaras0x4E/Ethereum

What you can do

  • Wallets: Create/import wallets, derive address/public key
  • Transfers: Send ETH using legacy (Type‑0) and EIP‑1559 (Type‑2) transactions; wait for confirmations
  • Balances & network: getBalance, getBalanceInEther, getBlockNumber, getNetworkInfo
  • Transactions: getTransaction, getTransactionReceipt, getTransactionStatus, getTransactionDetails
  • Address activity: Scan recent blocks with getTransactionsForAddress
  • Blocks: Fetch transactions with getTransactionsByBlockNumber
  • Utilities: Unit conversion, checksum addresses, hex helpers, hashing

Requirements

  • PHP 8.3+
  • Extensions: gmp, bcmath
  • An Ethereum JSON‑RPC endpoint (Infura)

Install 

composer require edgaras/ethereum
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Quick start: create a wallet and read balance 

<?php

use Edgaras\Ethereum\Ethereum;
use Edgaras\Ethereum\Wallet;

$rpcUrl = 'https://sepolia.infura.io/v3/YOUR_API_KEY';
$chainId = 11155111; // Sepolia

$eth = new Ethereum($rpcUrl, $chainId);

// Create a new wallet (or import with new Wallet('0xPRIVATE_KEY_HEX'))
$wallet = $eth->createWallet();
$eth->setWallet($wallet);

echo "Address: {$wallet->getAddress()}\n";
echo "Balance: {$eth->getBalanceInEther()} ETH\n";
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Send ETH (legacy Type‑0) 

use Edgaras\Ethereum\Ethereum;
use Edgaras\Ethereum\Wallet;

$eth = new Ethereum($rpcUrl, $chainId);
$eth->setWallet(new Wallet('0xYOUR_PRIVATE_KEY_HEX'));

$txHash = $eth->sendEther('0xRecipientAddress...', '0.01');
echo "tx: $txHash\n";

// Optional: wait for confirmation
$receipt = $eth->waitForConfirmation($txHash, maxAttempts: 60, delaySeconds: 2);
echo "included in block: {$receipt['blockNumber']}\n";
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Send ETH with EIP‑1559 (Type‑2) 

use Edgaras\Ethereum\Ethereum;
use Edgaras\Ethereum\Wallet;
use Edgaras\Ethereum\Utils;

$eth = new Ethereum($rpcUrl, $chainId);
$eth->setWallet(new Wallet('0xYOUR_PRIVATE_KEY_HEX'));

// Set EIP‑1559 gas parameters (in gwei)
$maxPriorityFeePerGasGwei = '2';  // 2 gwei tip
$maxFeePerGasGwei = '20';         // 20 gwei max fee

// Convert to wei hex
$maxPriorityFeePerGas = Utils::toHex(Utils::gweiToWei($maxPriorityFeePerGasGwei));
$maxFeePerGas = Utils::toHex(Utils::gweiToWei($maxFeePerGasGwei));

$txHash = $eth->sendEtherEIP1559(
    '0xRecipientAddress...',
    '0.01',
    $maxFeePerGas,
    $maxPriorityFeePerGas
);
echo "EIP‑1559 tx: $txHash\n";
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Practical examples

Minimal wallet overview (balance + recent txs):

use Edgaras\Ethereum\Ethereum;
use Edgaras\Ethereum\Utils;

$eth = new Ethereum($rpcUrl, $chainId);
$address = '0xRecipientAddress...';

$balanceEth = $eth->getBalanceInEther($address);
echo "Address: " . Utils::toChecksumAddress($address) . "\n";
echo "Balance: $balanceEth ETH\n\n";

$txs = $eth->getTransactionsForAddress($address, maxBlocksToScan: 1500, maxTxToShow: 20);
foreach ($txs as $t) {
    echo sprintf("[%s] %s | %s ETH | peer: %s | block: %d\n",
        $t['direction'], $t['hash'], $t['valueEth'], $t['peer'], $t['blockNumber']
    );
}
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List transactions in a block:

use Edgaras\Ethereum\Ethereum;

$eth = new Ethereum($rpcUrl, $chainId);
$blockNumber = 9354804; // example
$txs = $eth->getTransactionsByBlockNumber($blockNumber, limit: 10);

foreach ($txs as $i => $tx) {
    $idx = $i + 1;
    echo "#$idx\n";
    echo "  hash:  " . ($tx['hash'] ?? '') . "\n";
    echo "  from:  " . ($tx['from'] ?? '') . "\n";
    echo "  to:    " . ($tx['to'] ?? '') . "\n";
    echo "  value: " . ($tx['value'] ?? '0x0') . " (wei hex)\n\n";
}
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Utilities you’ll actually use 

use Edgaras\Ethereum\Utils;

// Unit conversion
$wei = Utils::etherToWei('1.5');
$eth = Utils::weiToEther('0x204fce5e3e250261100000000'); // hex or decimals
$gwei = Utils::weiToGwei('0x4a817c800');

// Address helpers
$isValid = Utils::isValidAddress('0x242d35Cc6634C0532925a3b8D4C9db96C4b4d8b6');
$checksum = Utils::toChecksumAddress('0x242d35cc6634c0532925a3b8d4c9db96c4b4d8b6');

// Hex helpers
$hex = Utils::toHex('255'); // 0xff
$dec = Utils::fromHex('0xff'); // 255
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EIP‑1559 in practice (why it matters)

  • Better fee predictability and reduced overpayment when the network is quiet
  • Dynamic fee market: you set a max fee and a priority tip; the base fee adjusts
  • Typed transactions: EIP‑2718 with proper hashing (0x02 || RLP(list)) for sender recovery

Pick EIP‑1559 for modern fee markets; fall back to legacy for maximum compatibility.

Production tips

  • Keep your private keys out of source control; inject via env/config vaults
  • Monitor base fee and adjust maxFeePerGas/maxPriorityFeePerGas dynamically
  • Wrap RPC errors and rate limits; the library exposes clear exceptions
  • Use waitForConfirmation with sensible timeouts and backoff in worker jobs

Top comments (3)

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umang_suthar_9bad6f345a8a profile image
Umang Suthar •

This is super helpful for PHP devs who want to interact with Ethereum without diving into the Node stack. It’s interesting how these kinds of libraries open doors for broader on-chain logic, even AI or compute-heavy tasks that once needed external servers.

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codesushil profile image
Code With Sushil •

Great works

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icolomina profile image
Nacho Colomina Torregrosa •

Fantastic ! I like reading projects and components built with PHP which allow developers to interact with the blockchain.