微信开发微信红包实例；

/*
 * 红包工具类
 * */
class bonus_pub extends Wxpay_client_pub{
    function __construct()
    {
        //设置接口链接
        $this->url = "https://api.mch.weixin.qq.com/mmpaymkttransfers/sendredpack";
        //设置curl超时时间
        $this->curl_timeout = WxPayConf_pub::CURL_TIMEOUT;
    }

    /**
     * 生成接口参数xml
     */
    function createXml()
    {
        try
        {

            //检测必填参数
            if($this->parameters["mch_billno"] == null)
            {
                throw new SDKRuntimeException("缺少红包接口必填参数mch_billno！"."
");
            }elseif($this->parameters["send_name"] == null){
                throw new SDKRuntimeException("缺少红包接口必填参数send_name！"."
");
            }elseif ($this->parameters["act_name"] == null ) {
                throw new SDKRuntimeException("缺少红包接口必填参数act_name！"."
");
            }elseif ($this->parameters["total_num"] == null) {
                throw new SDKRuntimeException("缺少红包接口必填参数total_num！"."
");
            }elseif ($this->parameters["total_amount"] == null) {
                throw new SDKRuntimeException("缺少红包接口必填参数total_amount！"."
");
            }elseif ( $this->parameters["re_openid"] == NULL){
                throw new SDKRuntimeException("缺少红包接口必填参数 openid！"."
");
            }elseif($this->parameters["remark"] == NULL){
                throw new SDKRuntimeException("缺少红包接口必填参数 remark！"."
");
            }elseif($this->parameters["wishing"] == NULL){
                throw new SDKRuntimeException("缺少红包接口必填参数 wishing！"."
");
            }
            $this->parameters["appid"] = WxPayConf_pub::APPID;//公众账号ID
            $this->parameters["mch_id"] = WxPayConf_pub::MCHID;//商户号
            $this->parameters["client_ip"] = $_SERVER[‘REMOTE_ADDR‘];//终端ip
            $this->parameters["nonce_str"] = $this->createNoncestr();//随机字符串
            $this->parameters["sign"] = $this->getSign($this->parameters);//签名

            return  $this->arrayToXml($this->parameters);
        }catch (SDKRuntimeException $e)
        {
            die($e->errorMessage());
        }
    }

    /**
     * 发红包 并且获取返回值
     */
    function send_bouns()
    {
        $this->postXmlSSL();
        $this->result = $this->xmlToArray($this->response);
        return $this->result;
    }
}

php
/**
 * Created by PhpStorm.
 * User: Administrator
 * Date: 15-9-8
 * Time: 下午6:07
 */
header("Content-type:text/html;charset=utf-8");
class bonus extends \Think\Controller{

    public function bonus(){
        //构造方法
        vendor ( ‘phpPay.WxPayPubHelper.WxPayPubHelper‘ );
    }

    /*openid 和红包金额*/
    public function sendBonus($openid,$fee){

        $fee = $fee*100;
        $bouns = new \bonus_pub();
        $mch_billno = WxPayConf_pub::MCHID.time().rand(0,100);
        $bouns->setParameter("wxappid",WxPayConf_pub::APPID);//总金额
        $bouns->setParameter("mch_billno","$mch_billno");//商户订单号
        $bouns->setParameter("send_name","Gosstech");//红包发送者名称
        $bouns->setParameter("re_openid","$openid");//用户openid
        $bouns->setParameter("total_amount","$fee");//总金额
        $bouns->setParameter("total_num","1");//红包发放总人数
        $bouns->setParameter("wishing","好人一生平安，gosstech公益基金会");//附加数据 订单ID
        $bouns->setParameter("act_name","公益红包");//活动名称
        $bouns->setParameter("remark","一起做公益吧");//备注
        $res = $bouns->send_bouns();
        return $res;
    }

}

php
/**
 * Created by PhpStorm.
 * User: Administrator
 * Date: 15-9-9
 * Time: 下午4:03
 */

namespace Pay\Controller;
use Think\Controller;
class BonusController extends Controller {
    public function sendBouns(){
        vendor ( ‘phpPay.demo.bonus‘ );
        $bonus = new \bonus();
        $bonus->sendBonus(‘oc8rujitiX4ghHtvP57WvQQW4-UA‘,1);
    }
}