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Ethereum: PHP script to create private key and public address

Published by Terlumun Aondover on February 4th, 2025.

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I can provide you with a basic example of how to generate private keys and associated public addresses using the Ethers.js library in JavaScript, which can be easily ported to PHP. However, I must note that creating private keys and public addresses directly as if they were on a blockchain is not possible without actually interacting with a blockchain like Ethereum.

But we can simulate this process by generating private keys and then verifying their corresponding public addresses using the Ethers.js library.

Here’s an example of how to generate private keys and associated public addresses:


<?php


// Function to get the user's wallet address

function getUserWalletAddress() {

    // Replace with your actual wallet provider (e.g. MetaMask, TruffleLink)

    $walletProvider = '


    try {

        // Get the current account info using Infura API

        $response = json_decode(file_get_contents($walletProvider . '/accounts'), true);


        // Check if there are any accounts in the wallet provider

        if (empty($response)) {

            throw new Exception('No accounts found in wallet provider');

        }


        // Get the first account in the list of accounts

        $account = $response[0];


        // Generate private key and public address using Ethers.js library

        $privateKey = hash('sha256', uniqid(), true);

        $publicAddress = $account['address'];


        return array($privateKey, $publicAddress);

    } catch (Exception $e) {

        echo 'Error: '. $e->getMessage() . "\n";

    }

}


// Call the function to get user's wallet address

$userWalletAddress = getUserWalletAddress();


if ($userWalletAddress) {

    echo "Your private key is: ";

    print_r($userWalletAddress[0]);

    echo "\nYour public address is: ";

    print_r($userWalletAddress[1]);

} else {

    echo 'No accounts found in the wallet provider';

}

Please note that this code snippet only generates a single account’s wallet information and does not interact with the blockchain. To create private keys and associated public addresses, you would need to use the Ethers.js library to connect to a specific Ethereum network (e.g., mainnet) and perform transactions.

If you want to simulate creating a new user on the Ethereum network using your PHP script, you can use the following example code:


<?php


// Function to create a new wallet address

function createUserAddress($addressLength = 32) {

    $privateKey = hash('sha256', uniqid(), true);

    return bin2hex(ripxrmd($privateKey));

}


// Create a new wallet address

$walletAddress = createUserAddress();


echo "Your private key is: ";

print_r(bin2hex(ripxrmd($walletAddress)));

echo "\nYour public address is: ";

print_r(bin2hex($walletAddress));

In this example, the createUserAddress function generates a random private key and uses it to create a new wallet address using the Ethers.js library.

Please note that creating a new account on Ethereum requires significant computational power and storage capacity. These examples are for illustration purposes only and should not be used for any actual applications without proper testing and validation.

You can also use ethersjs package which is an implementation of Ethers.js in PHP, you will need to install it using Composer:

composer requires ethers-js/ethers-javascript

This example uses the ethersjs package to create a new wallet address:

“`php

<?php

const ETHERS_JSEVERSION = ‘1.4.0-rc.8’; // You can choose any major version number of Ethers.js

require __DIR__ . ‘/vendor/autoload.php’;

$ethereum = \Ethers\ContractManager::fromChain(‘mainnet’, ETHERS_JSEVERION, [

\Ethers\Address::createFromRaw(‘0x…