README

WeChat Payment driver for the Omnipay PHP payment processing library

Deprecated We suggest you to use @lokielse's implementation of WeChatPay for Omnipay at lokielse/omnipay-wechatpay.

There's a pre-built Payment Gateway based on Omnipay at labs7in0/E-cash.

Installation

Omnipay is installed via Composer. To install, simply add it to your composer.json file:

{
    "require": {
        "labs7in0/omnipay-wechat": "dev-master"
    }
}

And run composer to update your dependencies:

$ curl -s http://getcomposer.org/installer | php
$ php composer.phar update

Basic Usage

The following gateways are provided by this package:

• WeChat Express (WeChat NATIVE)

For general usage instructions, please see the main Omnipay repository.

Example

Make a payment

The WeChat NATIVE payment gateway return a URI which can be opened within WeChat In-App broswer, you can generate a QR code with the URI.

$omnipay = Omnipay::create('WeChat_Express');

$omnipay->setAppId('app_id'); // App ID of your WeChat MP account
$omnipay->setAppKey('app_key'); // App Key of your WeChat MP account
$omnipay->setMchId('partner_id'); // Partner ID of your WeChat merchandiser (WeChat Pay) account

$params = array(
    'out_trade_no' => time() . rand(100, 999), // billing id in your system
    'notify_url' => $notify_url, // URL for asynchronous notify
    'body' => $billing_desc, // A simple description
    'total_fee' => 0.01, // Amount with less than 2 decimals places
    'fee_type' => 'CNY', // Currency name from ISO4217, Optional, default as CNY
);

$response = $omnipay->purchase($params)->send();

$qrCode = new Endroid\QrCode\QrCode(); // Use Endroid\QrCode to generate the QR code
$qrCode
    ->setText($response->getRedirectUrl())
    ->setSize(120)
    ->setPadding(0)
    ->render();

Verify a payment (especially for asynchronous notify)

completePurchase for Omnipay-WeChat does not require the same arguments as when you made the initial purchase call. The only required parameter is out_trade_no (the billing id in your system) or transaction_id (the trade number from WeChat).

$omnipay = Omnipay::create('WeChat_Express');

$omnipay->setAppId('app_id'); // App ID of your WeChat MP account
$omnipay->setAppKey('app_key'); // App Key of your WeChat MP account
$omnipay->setMchId('partner_id'); // Partner ID of your WeChat merchandiser (WeChat Pay) account

$params = array(
    'out_trade_no' => $billing_id, // billing id in your system
    //or you can use 'transaction_id', the trade number from WeChat
);

$response = $omnipay->completePurchase($params)->send();

if ($response->isSuccessful() && $response->isTradeStatusOk()) {
    $responseData = $response->getData();

    // Do something here
}

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License

The MIT License (MIT)

More info see LICENSE