How to use CodeIgniter to develop and implement Alipay interface calls

This article mainly introduces the method of using CodeIgniter to develop and implement the Alipay interface. It analyzes the operation steps and related implementation techniques of CodeIgniter to develop the Alipay interface in the form of examples. Friends in need can refer to the following

The examples of this article are explained Use CodeIgniter to develop methods to implement Alipay interface calls. Share it with everyone for your reference, the details are as follows:

Preparation:

1. Alipay official download the latest interface class library
2. After unzipping, copy the directory "\Instant Account Transaction Interface -create_direct_pay_by_user\demo\create_direct_pay_by_user-PHP-UTF-8\lib" to the application\third_party directory, and rename lib to alipay
3. Also copy the cacert.pem file to the "application\third_party\alipay" directory. This is not necessary. The certificate used when using the SSL channel

Code example:

Only the controller part of the code is listed below. The view and model can be written according to your actual needs

<?php if ( ! defined(&#39;BASEPATH&#39;)) exit(&#39;No direct script access allowed&#39;);
/**
 * alipy支付接口
 * @author onwulc@163.com
 *
 */
class Alipay extends CI_Controller {
  private $alipay_config;
  function __construct(){
    parent::__construct();
    $this->_init_config();
    $this->load->helper(&#39;url&#39;);
  }
  function index(){
    $this->load->view(&#39;alipay&#39;);//装载支付视图页面，post到do_alipay
  }
  function do_alipay(){
    require_once(APPPATH.&#39;third_party/alipay/alipay_submit.class.php&#39;);
    //构造要请求的参数数组，无需改动
    $parameter = array(
      "service" => "create_direct_pay_by_user",
      "partner" => trim($this->alipay_config[&#39;partner&#39;]),
      "payment_type"  => &#39;1&#39;,
      "notify_url"  => site_url(&#39;alipay/do_notify&#39;),
      "return_url"  => site_url(&#39;alipay/do_return&#39;),
      "seller_email"  => trim($this->alipay_config[&#39;seller_emaill&#39;]),//支付宝帐户,
      "out_trade_no"  => $this->input->post(&#39;WIDout_trade_no&#39;),//商户订单号
      "subject"  => $this->input->post(&#39;WIDsubject&#39;),//订单名称
      "total_fee"  => $this->input->post(&#39;WIDtotal_fee&#39;),//必填,付款金额
      "body"  => $this->input->post(&#39;WIDbody&#39;),//必填,订单描述
      "show_url"  => $this->input->post(&#39;WIDshow_url&#39;),//商品展示地址
      "anti_phishing_key"  => &#39;&#39;,//防钓鱼时间戳
      "exter_invoke_ip"  => &#39;&#39;,//客户端的IP地址
      "_input_charset"  => trim(strtolower($this->alipay_config[&#39;input_charset&#39;]))
    );
    //建立请求
    $alipaySubmit = new AlipaySubmit($this->alipay_config);
    $html_text = $alipaySubmit->buildRequestForm($parameter,"get", "确认");
    echo $html_text;
  }
  function do_notify(){
    require_once(APPPATH.&#39;third_party/alipay/alipay_notify.class.php&#39;);
  }
  function do_return(){
    require_once(APPPATH.&#39;third_party/alipay/alipay_notify.class.php&#39;);
    $alipayNotify = new AlipayNotify($this->alipay_config);
    $verify_result = $alipayNotify->verifyReturn();
    //商户订单号
    $out_trade_no = $_GET[&#39;out_trade_no&#39;];
    //支付宝交易号
    $trade_no = $_GET[&#39;trade_no&#39;];
    //交易状态
    $trade_status = $_GET[&#39;trade_status&#39;];
    if($_GET[&#39;trade_status&#39;] == &#39;TRADE_FINISHED&#39; || $_GET[&#39;trade_status&#39;] == &#39;TRADE_SUCCESS&#39;) {
      //判断该笔订单是否在商户网站中已经做过处理
      //如果没有做过处理，根据订单号（out_trade_no）在商户网站的订单系统中查到该笔订单的详细，并执行商户的业务程序
      //如果有做过处理，不执行商户的业务程序
      echo &#39;支付成功，交易处理环节&#39;;
    }else {
      echo "trade_status=".$_GET[&#39;trade_status&#39;];
    }
    echo "验证成功<br />";
  }
  /**
   * 初始化支付宝配置，详细参数请根据自己实际接口修改
   */
  private function _init_config(){
    //支付宝帐户
    $alipay_config[&#39;seller_emaill&#39;] = &#39;&#39;; 
    //合作身份者id，以2088开头的16位纯数字
    $alipay_config[&#39;partner&#39;] = &#39;2088999999999999&#39;;
    //安全检验码，以数字和字母组成的32位字符
    $alipay_config[&#39;key&#39;] = &#39;vhyjvdht3ayxbtx692vlkbwilhXXXXXX&#39;;
    //签名方式 不需修改
    $alipay_config[&#39;sign_type&#39;] = strtoupper(&#39;MD5&#39;);
    //字符编码格式 目前支持 gbk 或 utf-8
    $alipay_config[&#39;input_charset&#39;] = strtolower(&#39;utf-8&#39;);
    //ca证书路径地址，用于curl中ssl校验
    //请保证cacert.pem文件在当前文件夹目录中
    $alipay_config[&#39;cacert&#39;] = APPPATH.&#39;third_party/alipay/cacert.pem&#39;;
    //访问模式,根据自己的服务器是否支持ssl访问，若支持请选择https；若不支持请选择http
    $alipay_config[&#39;transport&#39;] = &#39;http&#39;;
    $this->alipay_config = $alipay_config;
  }
}

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