CodeIgniter开发实现支付宝接口调用的方法示例

<?php if ( ! defined('BASEPATH')) exit('No direct script access allowed');/** * 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('url');  }  function index(){    $this->load->view('alipay');//装载支付视图页面，post到do_alipay  }  function do_alipay(){    require_once(APPPATH.'third_party/alipay/alipay_submit.class.php');    //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['partner']),      "payment_type"  => '1',      "notify_url"  => site_url('alipay/do_notify'),      "return_url"  => site_url('alipay/do_return'),      "seller_email"  => trim($this->alipay_config['seller_emaill']),//支付宝帐户,      "out_trade_no"  => $this->input->post('WIDout_trade_no'),//商户订单号      "subject"  => $this->input->post('WIDsubject'),//订单名称      "total_fee"  => $this->input->post('WIDtotal_fee'),//必填,付款金额      "body"  => $this->input->post('WIDbody'),//必填,订单描述      "show_url"  => $this->input->post('WIDshow_url'),//商品展示地址      "anti_phishing_key"  => '',//防钓鱼时间戳      "exter_invoke_ip"  => '',//客户端的IP地址      "_input_charset"  => trim(strtolower($this->alipay_config['input_charset']))    );    //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.'third_party/alipay/alipay_notify.class.php');  }  function do_return(){    require_once(APPPATH.'third_party/alipay/alipay_notify.class.php');    $alipayNotify = new AlipayNotify($this->alipay_config);    $verify_result = $alipayNotify->verifyReturn();    //商户订单号    $out_trade_no = $_GET['out_trade_no'];    //支付宝交易号    $trade_no = $_GET['trade_no'];    //交易状态    $trade_status = $_GET['trade_status'];    if($_GET['trade_status'] == 'TRADE_FINISHED' || $_GET['trade_status'] == 'TRADE_SUCCESS') {      //判断该笔订单是否在商户网站中已经做过处理      //如果没有做过处理，根据订单号（out_trade_no）在商户网站的订单系统中查到该笔订单的详细，并执行商户的业务程序      //如果有做过处理，不执行商户的业务程序      echo '支付成功，交易处理环节';    }else {      echo "trade_status=".$_GET['trade_status'];    }    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['seller_emaill'] = '';     //合作身份者id，以2088开头的16位纯数字    $alipay_config['partner'] = '2088999999999999';    //安全检验码，以数字和字母组成的32位字符    $alipay_config['key'] = 'vhyjvdht3ayxbtx692vlkbwilhXXXXXX';    //签名方式 不需修改    $alipay_config['sign_type'] = strtoupper('MD5');    //字符编码格式 目前支持 gbk 或 utf-8    $alipay_config['input_charset'] = strtolower('utf-8');    //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['cacert'] = APPPATH.'third_party/alipay/cacert.pem';    //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['transport'] = 'http';    $this->alipay_config = $alipay_config;  }}