Payment Integration

[Dprof-code]

Integrated Payment on Base Network

Step-by-Step Implementation Install Web3p PHP SDK: composer require web3p/web3.php

Use Composer to install the Web3p PHP SDK. Initialize Blockchain Client:

Set up the client with your Infura API key in a configuration file. Create Payment Function:

Write a PHP function to create a payment request. Verify Payment:

Write a PHP function to verify the payment status. Update Wallet:

Update the driver's wallet balance upon successful payment. Code Implementation Step 1: Install Web3p PHP SDK Step 2: Initialize Blockchain Client Update [config.php]

Step 3: Create Payment Function Update payment.php:

Explanation createPayment: This function creates a payment transaction and returns the transaction hash. verifyPayment: This function verifies the payment by checking the transaction receipt. It uses a callback to handle asynchronous verification. updateWallet: This function updates the driver's wallet balance in the database. Example Usage: Creates a payment transaction. Verifies the payment using the transaction hash. Updates the wallet balance if the payment is verified successfully. This ensures that the wallet is only updated after the payment has been successfully verified.

[Dprof-code]

<?php
// config.php
return [
    'blockchain_api_url' => 'https://base-sepolia.infura.io/v3/YOUR-API-KEY',
    'wallet_address' => 'your_wallet_address',
    'wallet_private_key' => 'your_wallet_private_key',
];

[Dprof-code]

<?php

// payment.php

require 'vendor/autoload.php';
$config = require 'config.php';

use Web3\Web3;
use Web3\Utils;

$web3 = new Web3($config['blockchain_api_url']);
$eth = $web3->eth;

function createPayment($amount, $toAddress)
{
    global $eth, $config;
    $transaction = [
        'from' => $config['wallet_address'],
        'to' => $toAddress,
        'value' => Utils::toWei($amount, 'ether'),
    ];
    $eth->sendTransaction($transaction, function ($err, $tx) {
        if ($err !== null) {
            throw new Exception('Transaction failed: ' . $err->getMessage());
        }
        return $tx;
    });
}

function verifyPayment($txHash, $callback)
{
    global $eth;
    $eth->getTransactionReceipt($txHash, function ($err, $receipt) use ($callback) {
        if ($err !== null) {
            $callback($err, false);
            return;
        }
        $isValid = $receipt !== null && $receipt->status === '0x1';
        $callback(null, $isValid);
    });
}

function updateWallet($driverId, $amount)
{
    // Assuming you have a database connection set up
    $conn = new mysqli('localhost', 'username', 'password', 'database');
    $stmt = $conn->prepare("UPDATE drivers SET wallet_balance = wallet_balance + ? WHERE id = ?");
    $stmt->bind_param('di', $amount, $driverId);
    $stmt->execute();
    $stmt->close();
    $conn->close();
}

// Example usage
try {
    $txHash = createPayment(0.1, 'recipient_wallet_address');
    verifyPayment($txHash, function ($err, $isValid) {
        if ($err !== null) {
            echo 'Error: ' . $err->getMessage();
            return;
        }
        if ($isValid) {
            updateWallet(1, 0.1);
        } else {
            echo 'Payment verification failed.';
        }
    });
} catch (Exception $e) {
    echo 'Error: ' . $e->getMessage();
}