README

Official UseePay PHP SDK for payment processing. Compatible with PHP 5.4+.

Features

• 💳 Complete payment processing integration
• 👥 Customer management
• 🔐 Secure authentication with API keys
• 🌐 Support for multiple environments (Production & Sandbox)
• 📦 Easy integration with Composer
• ✅ PHP 5.4+ compatibility
• 🔒 SSL certificate auto-detection
• ⚡ Configurable timeouts and retries

Requirements

• PHP >= 5.4.0
• cURL extension
• JSON extension
• mbstring extension

Installation

Install via Composer:

composer require useepay/useepay-php

Quick Start

Initialize Client

<?php
require_once 'vendor/autoload.php';

use UseePay\UseePayClient;
use UseePay\Model\Authentication\Authentication;
use UseePay\Net\ApiEnvironment;

// Initialize authentication
$authentication = new Authentication(
    'YOUR_MERCHANT_NO',
    'YOUR_APP_ID',
    'YOUR_API_KEY'
);

// Create client (Production)
$client = new UseePayClient($authentication);

// Or use Sandbox environment
$client = UseePayClient::withEnvironment(
    ApiEnvironment::SANDBOX,
    $authentication
);

Create Payment Intent

<?php
use UseePay\UseePay;

// Optional: Configure timeouts
UseePay::setConnectTimeout(30);
UseePay::setReadTimeout(60);

// Create payment
$paymentParams = array(
    'amount' => 100.00,
    'currency' => 'USD',
    'description' => 'Order #12345',
    'merchant_order_id' => 'ORDER_12345',
    'customer' => array(
        'merchant_customer_id' => 'CUST_001',
        'first_name' => 'John',
        'last_name' => 'Doe',
        'email' => 'john.doe@example.com',
        'phone' => '+1234567890',
        'address' => array(
            'line1' => '123 Main St',
            'city' => 'New York',
            'state' => 'NY',
            'postal_code' => '10001',
            'country' => 'US'
        )
    )
);

$paymentIntent = $client->paymentIntents()->create($paymentParams);

// Handle redirect for payment
if ($paymentIntent['status'] === 'requires_payment_method') {
    $redirectUrl = $paymentIntent['next_action']['redirect']['url'];
    header('Location: ' . $redirectUrl);
    exit;
}

Create Customer

<?php
use UseePay\Param\Customer\CustomerCreateParams;

$params = new CustomerCreateParams();
$params->merchantCustomerId = 'CUST_' . time();
$params->firstName = 'John';
$params->lastName = 'Doe';
$params->email = 'john.doe@example.com';
$params->phone = '+1234567890';

$customer = $client->customers()->create($params);
echo "Customer ID: " . $customer['id'];

Retrieve Customer

<?php
$customerId = 'cus_xxxxxxxxxxxxx';
$customer = $client->customers()->retrieve($customerId);
print_r($customer);

List Customers

<?php
use UseePay\Param\Customer\CustomerListParams;

$params = new CustomerListParams();
$params->limit = 10;
$params->startingAfter = null;

$customers = $client->customers()->list($params);
foreach ($customers['data'] as $customer) {
    echo $customer['email'] . "\n";
}

Configuration

SSL Certificate Verification

<?php
use UseePay\UseePay;

// Disable SSL verification (NOT recommended for production)
UseePay::setVerifySslCerts(false);

// Set custom CA bundle path
UseePay::setCaBundlePath('/path/to/cacert.pem');

Timeout Configuration

<?php
use UseePay\UseePay;

// Set connection timeout (default: 6 seconds)
UseePay::setConnectTimeout(30);

// Set read timeout (default: 30 seconds)
UseePay::setReadTimeout(60);

// Set max network retries (default: 0)
UseePay::setMaxNetworkRetries(3);

Error Handling

<?php
use UseePay\Exception\ApiException;
use UseePay\Exception\AuthenticationException;

try {
    $paymentIntent = $client->paymentIntents()->create($params);
} catch (AuthenticationException $e) {
    // Handle authentication errors
    echo "Authentication failed: " . $e->getMessage();
} catch (ApiException $e) {
    // Handle API errors
    echo "API error: " . $e->getMessage();
    echo "Error code: " . $e->getCode();
} catch (Exception $e) {
    // Handle other errors
    echo "Error: " . $e->getMessage();
}

Examples

Complete examples are available in the examples/ directory:

• Customer Management: examples/CustomerExample.php
• Payment Checkout: examples/checkout.html + examples/checkout_handler.php
• E-commerce Demo: examples/clothing_shop.html

API Documentation

For detailed API documentation, visit:

• UseePay API Documentation
• Developer Portal

Support

• Email: technology@useepay.com
• Issues: GitHub Issues
• Documentation: API Docs

Contributing

Contributions are welcome! Please feel free to submit a Pull Request.

License

This project is licensed under the Apache License 2.0 - see the LICENSE file for details.

Changelog

See CHANGELOG.md for version history and updates.

Made with ❤️ by the UseePay Team