Laravel WeChat payment development example

In this article, we mainly share with you Laravel development examples of WeChat payment. WeChat payment is very popular now, especially on mobile phones. We only need simple operations to complete the payment. I hope we can help everyone.

1. Install dependency packages

Run the following command in the project root directory to install the dependencies:

composer require overtrue/laravel-wechat 2.1.*

After the installation is complete, register the service provider in config/app.php:

Overtrue\LaravelWechat\ServiceProvider::class
If you want to pass the WeChat facade in code, you can add it to the aliases array in config/app.php:

'Wechat' => Overtrue\LaravelWechat\Facade::class

2 , Configure WeChat public account settings
After completing the above operations, run the following command to publish the configuration file to the config directory:

php artisan vendor:publish

After successful operation, edit the config/wechat.php file:

<?php
  return [
      &#39;use_alias&#39; => env(&#39;WECHAT_USE_ALIAS&#39;, false),
      &#39;app_id&#39; => env(&#39;WECHAT_APPID&#39;, &#39;Your AppId&#39;), // 必填
      &#39;secret&#39; => env(&#39;WECHAT_SECRET&#39;, &#39;Your Secret&#39;), // 必填
      &#39;token&#39; => env(&#39;WECHAT_TOKEN&#39;, &#39;Your Token&#39;), // 必填
      &#39;encoding_key&#39; => env(&#39;WECHAT_ENCODING_KEY&#39;, &#39;Your Encoding AES Key&#39;) // 只有加密模式需要
  ];

Fill in the relevant information of your WeChat public account into the corresponding configuration. It should be noted that if you want to use the WeChat payment function, you need a certified public account, and the current WeChat public platform test account does not support the payment interface.

Before using WeChat payment, you need to go to the WeChat public platform to configure the authorization directory, test account and other information. For WeChat payment development documentation, please refer to: https://pay.weixin.qq.com/wiki/doc/api/index.html

3. Usage examples

Note: Laravel 5 is enabled by default Without the CSRF middleware, because the WeChat message is POSTed, it will trigger the CSRF check and result in the inability to respond to the message correctly, so the specified URL can be excluded from the CSRF verification. For details, please refer to: How to exclude specified URLs from CSRF in Laravel.
PHP

<?php
use Overtrue\Wechat\Payment;  
use Overtrue\Wechat\Payment\Order;  
use Overtrue\Wechat\Payment\Business;  
use Overtrue\Wechat\Payment\UnifiedOrder;
/**   * 第 1 步：定义商户   */  
$business = new Business(      APP_ID,      APP_KEY,      MCH_ID,      MCH_KEY  );
/**   * 第 2 步：定义订单   */  
$order = new Order();  
$order->body = &#39;test body&#39;;  
$order->out_trade_no = md5(uniqid().microtime());  
$order->total_fee = &#39;1&#39;; // 单位为 “分”, 字符串类型  
$order->openid = OPEN_ID;  
$order->notify_url = &#39;http://xxx.com/wechat/payment/notify&#39;;
/**   * 第 3 步：统一下单   */  
$unifiedOrder = new UnifiedOrder($business, $order);
/**   * 第 4 步：生成支付配置文件   */  
$payment = new Payment($unifiedOrder);  
Javascript
var WXPayment = function() {      
if( typeof WeixinJSBridge === &#39;undefined&#39; ) {          
alert(&#39;请在微信在打开页面！&#39;);          
return false;      
}      
WeixinJSBridge.invoke(          &#39;getBrandWCPayRequest&#39;, <?php echo $payment->getConfig(); 
?>, 
function(res) {              
switch(res.err_msg) {                  
case &#39;get_brand_wcpay_request:cancel&#39;:                      
alert(&#39;用户取消支付！&#39;);                      
break;                  
case &#39;get_brand_wcpay_request:fail&#39;:                      
alert(&#39;支付失败！（&#39; res.err_desc &#39;）&#39;);                      
break;                  
case &#39;get_brand_wcpay_request:ok&#39;:                      
alert(&#39;支付成功！&#39;);                      
break;                  
default:                      
alert(JSON.stringify(res));                      
break;              
}          
}      
);  }  
HTML
<button type="button" onclick="WXPayment()">      
支付 ￥<?php 
echo ($order->total_fee / 100); 
?> 元  </button>

Payment notification

<?php
use Overtrue\Wechat\Payment\Notify;
$notify = new Notify(      APP_ID,      APP_KEY,      MCH_ID,      MCH_KEY  );
$transaction = $notify->verify();
if (!$transaction) {      $notify->reply(&#39;FAIL&#39;, &#39;verify transaction error&#39;);  }
// var_dump($transaction);
echo $notify->reply();

4. Use in Lumen

In addition, laravel-wechat also supports Lumen. After using Composer to install laravel-wechat, you need to add this line of code around line 82 in bootstrap/app.php:

$app->register(Overtrue\LaravelWechat\ServiceProvider::class);

Also configure the following options in ENV:

WECHAT_USE_ALIAS=false
  WECHAT_APPID=xxx
  WECHAT_SECRET=xxx
  WECHAT_TOKEN=xxx
  WECHAT_ENCODING_KEY=xxx

If you are used to using config/wechat.php to configure, please remember to add after line 19 in bootstrap/app.php:

$app->configure('wechat');

Of course, in addition, laravel-wechat also provides more WeChat SDK support.

Related recommendations:

PHP Alipay interface example detailed explanation

PHP implements RSA signature generation order using Alipay as an example Function

How do php beginners learn to implement WeChat payment and Alipay payment related tutorials

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