csapi/application/index/service/wechat/WxPayPubHelper.php

<?php
/**
 * 微信支付帮助库
 * ====================================================
 * 接口分三种类型：
 * 【请求型接口】--Wxpay_client_
 * 		统一支付接口类--UnifiedOrder
 * 		订单查询接口--OrderQuery
 * 		退款申请接口--Refund
 * 		退款查询接口--RefundQuery
 * 		对账单接口--DownloadBill
 * 		短链接转换接口--ShortUrl
 * 【响应型接口】--Wxpay_server_
 * 		通用通知接口--Notify
 * 		Native支付——请求商家获取商品信息接口--NativeCall
 * 【其他】
 * 		静态链接二维码--NativeLink
 * 		JSAPI支付--JsApi
 * =====================================================
 * 【CommonUtil】常用工具：
 * 		trimString()，设置参数时需要用到的字符处理函数
 * 		createNoncestr()，产生随机字符串，不长于32位
 * 		formatBizQueryParaMap(),格式化参数，签名过程需要用到
 * 		getSign(),生成签名
 * 		arrayToXml(),array转xml
 * 		xmlToArray(),xml转 array
 * 		postXmlCurl(),以post方式提交xml到对应的接口url
 * 		postXmlSSLCurl(),使用证书，以post方式提交xml到对应的接口url
 */
namespace app\index\service\wechat;

use think\Config;
use think\Log;

require_once('SDKRuntimeException.php');

/**
 * 所有接口的基类
 */

class Common_util_pub
{
    function __construct() {
    }

    function trimString($value)
    {
        $ret = null;
        if (null != $value)
        {
            $ret = $value;
            if (strlen($ret) == 0)
            {
                $ret = null;
            }
        }
        return $ret;
    }

    /**
     * 	作用：产生随机字符串，不长于32位
     */
    public function createNoncestr( $length = 32 )
    {
        $chars = "abcdefghijklmnopqrstuvwxyz0123456789";
        $str ="";
        for ( $i = 0; $i < $length; $i++ )  {
            $str.= substr($chars, mt_rand(0, strlen($chars)-1), 1);
        }

        return $str;
    }

    /**
     * 	作用：格式化参数，签名过程需要使用
     */
    function formatBizQueryParaMap($paraMap, $urlencode)
    {
        $buff = "";
        ksort($paraMap);
        foreach ($paraMap as $k => $v)
        {
            if($urlencode)
            {
                $v = urlencode($v);
            }
            $buff .= $k . "=" . $v . "&";
        }
        $reqPar = '';
        if (strlen($buff) > 0)
        {
            $reqPar = substr($buff, 0, strlen($buff)-1);
        }
        return $reqPar;
    }

    /**
     * 	作用：生成签名
     */
    public function getSign($Obj)
    {
        if(!Config::get('WECHAT_PAY_KEY')){
            throw new \Exception('商户key不存在！');
        }

        foreach ((array)$Obj as $k => $v)
        {
            $Parameters[$k] = $v;
        }
        //签名步骤一：按字典序排序参数
        ksort($Parameters);
        $String = $this->formatBizQueryParaMap($Parameters, false);
        //echo '【string1】'.$String.'</br>';
        //签名步骤二：在string后加入KEY
        $String = $String."&key=".Config::get('WECHAT_PAY_KEY');
        //签名步骤三：MD5加密
        $String = md5($String);
        //echo "【string3】 ".$String."</br>";
        //签名步骤四：所有字符转为大写
        $result_ = strtoupper($String);
        //echo "【result】 ".$result_."</br>";
        return $result_;
    }

    /**
     * 	作用：array转xml
     */
    function arrayToXml($arr){

        $xml = "<xml>";
        foreach ($arr as $key=>$val)
        {
            //if (is_numeric($val)){
            $xml.="<".$key.">".$val."</".$key.">";
            //}
//                                 else{
//                                     $xml.="<".$key."><![CDATA[".$val."]]></".$key.">";
//                                 }
        }
        $xml.="</xml>";
        return $xml;
    }

    /**
     * 	作用：将xml转为array
     */
    public function xmlToArray($xml)
    {
        //将XML转为array
        $array_data = json_decode(json_encode(simplexml_load_string($xml, 'SimpleXMLElement', LIBXML_NOCDATA)), true);
        return $array_data;
    }

    /**
     * 	作用：以post方式提交xml到对应的接口url
     */
    public function postXmlCurl($xml,$url,$second=30)
    {
        //初始化curl
        $ch = curl_init();
        //设置超时
        //curl_setopt($ch, CURLOP_TIMEOUT, $second);
        //这里设置代理，如果有的话
        //curl_setopt($ch,CURLOPT_PROXY, '8.8.8.8');
        //curl_setopt($ch,CURLOPT_PROXYPORT, 8080);
        curl_setopt($ch,CURLOPT_URL, $url);
        curl_setopt($ch,CURLOPT_SSL_VERIFYPEER,FALSE);
        curl_setopt($ch,CURLOPT_SSL_VERIFYHOST,FALSE);
        //设置header
        curl_setopt($ch, CURLOPT_HEADER, FALSE);
        //要求结果为字符串且输出到屏幕上
        curl_setopt($ch, CURLOPT_RETURNTRANSFER, TRUE);
        //post提交方式
        curl_setopt($ch, CURLOPT_POST, TRUE);
        curl_setopt($ch, CURLOPT_POSTFIELDS, $xml);
        //运行curl
        $data = curl_exec($ch);
        //curl_close($ch);
        //返回结果
        if($data)
        {
            curl_close($ch);
            return $data;
        }
        else
        {
            $error = curl_errno($ch);
            //echo "curl出错，错误码:$error"."<br>";
            echo "<a href='http://curl.haxx.se/libcurl/c/libcurl-errors.html'>错误原因查询</a></br>";
            curl_close($ch);
            die("pay error($error)");
            return false;
        }
    }

    /**
     * 	作用：使用证书，以post方式提交xml到对应的接口url
     */
    function postXmlSSLCurl($xml,$url,$second=30)
    {
        $ch = curl_init();
        //超时时间
        curl_setopt($ch,CURLOPT_TIMEOUT,$second);
        //这里设置代理，如果有的话
        //curl_setopt($ch,CURLOPT_PROXY, '8.8.8.8');
        //curl_setopt($ch,CURLOPT_PROXYPORT, 8080);
        curl_setopt($ch,CURLOPT_URL, $url);
        curl_setopt($ch,CURLOPT_SSL_VERIFYPEER,FALSE);
        curl_setopt($ch,CURLOPT_SSL_VERIFYHOST,FALSE);
        //设置header
        curl_setopt($ch,CURLOPT_HEADER,FALSE);
        //要求结果为字符串且输出到屏幕上
        curl_setopt($ch,CURLOPT_RETURNTRANSFER,TRUE);
        //设置证书
        //使用证书：cert 与 key 分别属于两个.pem文件
        //默认格式为PEM，可以注释
        curl_setopt($ch,CURLOPT_SSLCERTTYPE,'PEM');
        curl_setopt($ch,CURLOPT_SSLCERT, WxPayConfig::$SSLCERT_PATH);
        //默认格式为PEM，可以注释
        curl_setopt($ch,CURLOPT_SSLKEYTYPE,'PEM');
        curl_setopt($ch,CURLOPT_SSLKEY, WxPayConfig::$SSLKEY_PATH);
        //post提交方式
        curl_setopt($ch,CURLOPT_POST, true);
        curl_setopt($ch,CURLOPT_POSTFIELDS,$xml);
        $data = curl_exec($ch);
        //返回结果
        if($data){
            curl_close($ch);
            return $data;
        }
        else {
            $error = curl_errno($ch);
            echo "curl出错，错误码:$error"."<br>";
            echo "<a href='http://curl.haxx.se/libcurl/c/libcurl-errors.html'>错误原因查询</a></br>";
            curl_close($ch);
            return false;
        }
    }

    /**
     * 	作用：打印数组
     */
    function printErr($wording='',$err='')
    {
        print_r('<pre>');
        echo $wording."</br>";
        var_dump($err);
        print_r('</pre>');
    }
}

/**
 * 请求型接口的基类
 */
class Wxpay_client_pub extends Common_util_pub
{
    public $parameters;//请求参数，类型为关联数组
    public $requestXml;
    public $response;//微信返回的响应
    public $result;//返回参数，类型为关联数组
    var $url;//接口链接
    var $curl_timeout;//curl超时时间

    /**
     * 	作用：设置请求参数
     */
    function setParameter($parameter, $parameterValue)
    {
        $this->parameters[$this->trimString($parameter)] = $this->trimString($parameterValue);
    }

    /**
     * 	作用：设置标配的请求参数，生成签名，生成接口参数xml
     */
    function createXml()
    {
        $this->parameters["appid"] = Config::get('WECHAT_APPID');//公众账号ID
        $this->parameters["mch_id"] = Config::get('WECHAT_MCHID');//商户号
        $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);
    }

    /**
     * 	作用：post请求xml
     */
    function postXml()
    {
        $xml = $this->createXml();
        $this->response = $this->postXmlCurl($xml,$this->url,$this->curl_timeout);
        return $this->response;
    }

    /**
     * 	作用：使用证书post请求xml
     */
    function postXmlSSL()
    {
        $xml = $this->createXml();
        var_dump($xml);
        $this->response = $this->postXmlSSLCurl($xml,$this->url,$this->curl_timeout);
        var_dump($this->response);exit;
        return $this->response;
    }

    /**
     * 	作用：获取结果，默认不使用证书
     */
    function getResult()
    {
        $this->postXml();
        $this->result = $this->xmlToArray($this->response);
        return $this->result;
    }
}


/**
 * 统一支付接口类
 */
class UnifiedOrder_pub extends Wxpay_client_pub
{
    function __construct()
    {
        //设置接口链接
        $this->url = "https://api.mch.weixin.qq.com/pay/unifiedorder";
        //设置curl超时时间
        $this->curl_timeout = 3;
    }

    /**
     * 生成接口参数xml
     */
    function createXml()
    {
        try{
            //检测必填参数
            if($this->parameters["out_trade_no"] == null)
            {
                throw new SDKRuntimeException("缺少统一支付接口必填参数out_trade_no！"."<br>");
            }elseif($this->parameters["body"] == null){
                throw new SDKRuntimeException("缺少统一支付接口必填参数body！"."<br>");
            }elseif ($this->parameters["total_fee"] == null ) {
                throw new SDKRuntimeException("缺少统一支付接口必填参数total_fee！"."<br>");
            }elseif ($this->parameters["notify_url"] == null) {
                throw new SDKRuntimeException("缺少统一支付接口必填参数notify_url！"."<br>");
            }elseif ($this->parameters["trade_type"] == null) {
                throw new SDKRuntimeException("缺少统一支付接口必填参数trade_type！"."<br>");
            }elseif ($this->parameters["trade_type"] == "JSAPI" &&
                empty($this->parameters["openid"]) ){
                //throw new SDKRuntimeException("统一支付接口中，缺少必填参数openid！trade_type为JSAPI时，openid为必填参数！"."<br>");
            }
            $this->parameters["appid"] = Config::get('WECHAT_APPID');//公众账号ID
            $this->parameters["mch_id"] = Config::get('WECHAT_MCHID');//商户号

            if(!empty(Config::get('WECHAT_SUB_MCHID'))){
                $this->parameters["sub_mch_id"] = Config::get('WECHAT_SUB_MCHID');//商户号
            }

            if(empty($this->parameters["openid"])){
                unset($this->parameters["openid"]);
            }

            if(!empty(Config::get('WECHAT_SUB_APPID'))){
                $this->parameters["sub_appid"] = Config::get('WECHAT_SUB_APPID');//商户号
            }

            if(empty(Config::get('WECHAT_SUB_APPID')) && !empty($this->parameters["sub_openid"])){
                $this->parameters["openid"] = $this->parameters["sub_openid"];
                unset($this->parameters["sub_openid"]);
            }

            $this->parameters["spbill_create_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

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

    /**
     * 获取prepay_id
     */
    function getPrepayId()
    {
        $this->postXml();
        $this->result = $this->xmlToArray($this->response);

        if(!isset($this->result["prepay_id"])) {
            \app\common\service\HelperService::returnJson([
                'data'=>$this->result,
                'msg'=>'prepay_id失败',
                'code'=>200,
                'para'=>$this->requestXml
            ]);
        }
        $prepay_id = $this->result["prepay_id"];
        return $prepay_id;
    }

}

/**
 * 订单查询接口
 */
class OrderQuery_pub extends Wxpay_client_pub
{
    function __construct()
    {
        //设置接口链接
        $this->url = "https://api.mch.weixin.qq.com/pay/orderquery";
        //设置curl超时时间
        $this->curl_timeout = 3;
    }

    /**
     * 生成接口参数xml
     */
    function createXml()
    {
        try
        {
            //检测必填参数
            if($this->parameters["out_trade_no"] == null &&
                $this->parameters["transaction_id"] == null)
            {
                throw new SDKRuntimeException("订单查询接口中，out_trade_no、transaction_id至少填一个！"."<br>");
            }
            $this->parameters["appid"] = Config::get('WECHAT_APPID');//公众账号ID
            $this->parameters["mch_id"] = Config::get('WECHAT_MCHID');//商户号
            $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());
        }
    }

}

/**
 * 退款申请接口
 */
class Refund_pub extends Wxpay_client_pub
{

    function __construct() {
        //设置接口链接
        $this->url = "https://api.mch.weixin.qq.com/secapi/pay/refund";
        //设置curl超时时间
        $this->curl_timeout = 3;
    }

    /**
     * 生成接口参数xml
     */
    function createXml()
    {
        try
        {
            //检测必填参数
            if($this->parameters["out_trade_no"] == null && $this->parameters["transaction_id"] == null) {
                throw new SDKRuntimeException("退款申请接口中，out_trade_no、transaction_id至少填一个！"."<br>");
            }elseif($this->parameters["out_refund_no"] == null){
                throw new SDKRuntimeException("退款申请接口中，缺少必填参数out_refund_no！"."<br>");
            }elseif($this->parameters["total_fee"] == null){
                throw new SDKRuntimeException("退款申请接口中，缺少必填参数total_fee！"."<br>");
            }elseif($this->parameters["refund_fee"] == null){
                throw new SDKRuntimeException("退款申请接口中，缺少必填参数refund_fee！"."<br>");
            }elseif($this->parameters["op_user_id"] == null){
                throw new SDKRuntimeException("退款申请接口中，缺少必填参数op_user_id！"."<br>");
            }
            $this->parameters["appid"] = Config::get('WECHAT_APPID');//公众账号ID
            $this->parameters["mch_id"] = Config::get('WECHAT_MCHID');//商户号
            $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());
        }
    }
    /**
     * 	作用：获取结果，使用证书通信
     */
    function getResult()
    {
        $this->postXmlSSL();
        echo 111;exit;
        $this->result = $this->xmlToArray($this->response);
        return $this->result;
    }

}



/**
 * 提交刷卡支付
 */
class MicroPay_pub extends Wxpay_client_pub
{

    function __construct() {
        //设置接口链接
        $this->url = "https://api.mch.weixin.qq.com/pay/micropay";
        //设置curl超时时间
        $this->curl_timeout = 3;
    }

    /**
     * 生成接口参数xml
     */
    function createXml()
    {
        try
        {
            //检测必填参数
            if($this->parameters["out_trade_no"] == null && $this->parameters["transaction_id"] == null) {
                throw new SDKRuntimeException("付款码接口中，out_trade_no至少填一个！"."<br>");
            }elseif($this->parameters["spbill_create_ip"] == null){
                throw new SDKRuntimeException("付款码接口中，缺少必填参数spbill_create_ip！"."<br>");
            }elseif($this->parameters["total_fee"] == null){
                throw new SDKRuntimeException("付款码接口中，缺少必填参数total_fee！"."<br>");
            }elseif($this->parameters["auth_code"] == null){
                throw new SDKRuntimeException("付款码接口中，缺少必填参数auth_code！"."<br>");
            }
            $this->parameters["appid"] = Config::get('WECHAT_APPID');//公众账号ID
            $this->parameters["mch_id"] = Config::get('WECHAT_MCHID');//商户号
            $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());
        }
    }
    /**
     * 	作用：获取结果，使用证书通信
     */
    function getResult()
    {
        $this->postXmlSSL();
        $this->result = $this->xmlToArray($this->response);
        return $this->result;
    }

}


/**
 * 退款查询接口
 */
class RefundQuery_pub extends Wxpay_client_pub
{

    function __construct() {
        //设置接口链接
        $this->url = "https://api.mch.weixin.qq.com/pay/refundquery";
        //设置curl超时时间
        $this->curl_timeout = 5;
    }

    /**
     * 生成接口参数xml
     */
    function createXml()
    {
        try
        {
            if($this->parameters["out_refund_no"] == null &&
                $this->parameters["out_trade_no"] == null &&
                $this->parameters["transaction_id"] == null &&
                $this->parameters["refund_id "] == null)
            {

                throw new SDKRuntimeException("退款查询接口中，out_refund_no、out_trade_no、transaction_id、refund_id四个参数必填一个！"."<br>");
            }
            $this->parameters["appid"] = Config::get('WECHAT_APPID');//公众账号ID
            $this->parameters["mch_id"] = Config::get('WECHAT_MCHID');//商户号
            $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());
        }
    }

    /**
     * 	作用：获取结果，使用证书通信
     */
    function getResult()
    {
        $this->postXmlSSL();
        $this->result = $this->xmlToArray($this->response);
        return $this->result;
    }

}

/**
 * 对账单接口
 */
class DownloadBill_pub extends Wxpay_client_pub
{

    function __construct()
    {
        //设置接口链接
        $this->url = "https://api.mch.weixin.qq.com/pay/downloadbill";
        //设置curl超时时间
        $this->curl_timeout = 3;
    }

    /**
     * 生成接口参数xml
     */
    function createXml()
    {
        try
        {
            if($this->parameters["bill_date"] == null )
            {
                throw new SDKRuntimeException("对账单接口中，缺少必填参数bill_date！"."<br>");
            }
            $this->parameters["appid"] = Config::get('WECHAT_APPID');//公众账号ID
            $this->parameters["mch_id"] = Config::get('WECHAT_MCHID');//商户号
            $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());
        }
    }

    /**
     * 	作用：获取结果，默认不使用证书
     */
    function getResult()
    {
        $this->postXml();
        $this->result = $this->xmlToArray($this->result_xml);
        return $this->result;
    }



}

/**
 * 短链接转换接口
 */
class ShortUrl_pub extends Wxpay_client_pub
{
    function __construct()
    {
        //设置接口链接
        $this->url = "https://api.mch.weixin.qq.com/tools/shorturl";
        //设置curl超时时间
        $this->curl_timeout = 3;
    }

    /**
     * 生成接口参数xml
     */
    function createXml()
    {
        try
        {
            if($this->parameters["long_url"] == null )
            {
                throw new SDKRuntimeException("短链接转换接口中，缺少必填参数long_url！"."<br>");
            }
            $this->parameters["appid"] = Config::get('WECHAT_APPID');//公众账号ID
            $this->parameters["mch_id"] = Config::get('WECHAT_MCHID');//商户号
            $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());
        }
    }

    /**
     * 获取prepay_id
     */
    function getShortUrl()
    {
        $this->postXml();
        $prepay_id = $this->result["short_url"];
        return $prepay_id;
    }

}

/**
 * 响应型接口基类
 */
class Wxpay_server_pub extends Common_util_pub
{
    public $data;//接收到的数据，类型为关联数组
    var $returnParameters;//返回参数，类型为关联数组

    /**
     * 将微信的请求xml转换成关联数组，以方便数据处理
     */
    function saveData($xml)
    {
        $this->data = $this->xmlToArray($xml);
    }

    function checkSign()
    {
        $tmpData = $this->data;
        unset($tmpData['sign']);
        $sign = $this->getSign($tmpData);//本地签名
        if ($this->data['sign'] == $sign) {
            return TRUE;
        }
        return FALSE;
    }

    /**
     * 获取微信的请求数据
     */
    function getData()
    {
        return $this->data;
    }

    /**
     * 设置返回微信的xml数据
     */
    function setReturnParameter($parameter, $parameterValue)
    {
        $this->returnParameters[$this->trimString($parameter)] = $this->trimString($parameterValue);
    }

    /**
     * 生成接口参数xml
     */
    function createXml()
    {
        return $this->arrayToXml($this->returnParameters);
    }

    /**
     * 将xml数据返回微信
     */
    function returnXml()
    {
        $returnXml = $this->createXml();
        return $returnXml;
    }
}


/**
 * 通用通知接口
 */
class Notify_pub extends Wxpay_server_pub
{

}




/**
 * 请求商家获取商品信息接口
 */
class NativeCall_pub extends Wxpay_server_pub
{
    /**
     * 生成接口参数xml
     */
    function createXml()
    {
        if($this->returnParameters["return_code"] == "SUCCESS"){
            $this->returnParameters["appid"] = Config::get('WECHAT_APPID');//公众账号ID
            $this->returnParameters["mch_id"] = Config::get('WECHAT_MCHID');//商户号
            $this->returnParameters["nonce_str"] = $this->createNoncestr();//随机字符串
            $this->returnParameters["sign"] = $this->getSign($this->returnParameters);//签名
        }
        return $this->arrayToXml($this->returnParameters);
    }

    /**
     * 获取product_id
     */
    function getProductId()
    {
        $product_id = $this->data["product_id"];
        return $product_id;
    }

}

/**
 * 静态链接二维码
 */
class NativeLink_pub  extends Common_util_pub
{
    var $parameters;//静态链接参数
    var $url;//静态链接

    function __construct()
    {
    }

    /**
     * 设置参数
     */
    function setParameter($parameter, $parameterValue)
    {
        $this->parameters[$this->trimString($parameter)] = $this->trimString($parameterValue);
    }

    /**
     * 生成Native支付链接二维码
     */
    function createLink()
    {
        try
        {
            if($this->parameters["product_id"] == null)
            {
                throw new SDKRuntimeException("缺少Native支付二维码链接必填参数product_id！"."<br>");
            }
            $this->parameters["appid"] = Config::get('WECHAT_APPID');//公众账号ID
            $this->parameters["mch_id"] = Config::get('WECHAT_MCHID');//商户号
            $time_stamp = time();
            $this->parameters["time_stamp"] = "$time_stamp";//时间戳
            $this->parameters["nonce_str"] = $this->createNoncestr();//随机字符串
            $this->parameters["sign"] = $this->getSign($this->parameters);//签名
            $bizString = $this->formatBizQueryParaMap($this->parameters, false);
            $this->url = "weixin://wxpay/bizpayurl?".$bizString;
        }catch (SDKRuntimeException $e)
        {
            die($e->errorMessage());
        }
    }

    /**
     * 返回链接
     */
    function getUrl()
    {
        $this->createLink();
        return $this->url;
    }
}

/**
 * JSAPI支付——H5网页端调起支付接口
 */
class JsApi_pub extends Common_util_pub
{
    var $code;//code码，用以获取openid
    var $openid;//用户的openid
    var $parameters;//jsapi参数，格式为json
    var $prepay_id;//使用统一支付接口得到的预支付id
    var $curl_timeout;//curl超时时间

    function __construct()
    {
        //设置curl超时时间
        $this->curl_timeout = 3;
    }

    /**
     * 生成可以获得code的url，只能获取openid
     * @param $redirectUrl
     * @param $number
     * @return string
     */
    function createOauthOpenidForCode($redirectUrl,$number)
    {
        $urlObj["appid"] = Config::get('WECHAT_APPID');
        $urlObj["redirect_uri"] = "$redirectUrl";
        $urlObj["response_type"] = "code";
        $urlObj["scope"] = "snsapi_base";
        $urlObj["state"] = "$number"."#wechat_redirect";
        $bizString = $this->formatBizQueryParaMap($urlObj, false);
        return "https://open.weixin.qq.com/connect/oauth2/authorize?".$bizString;
    }

    /**
     * 生成可以获得code的url,不仅限于openid信息
     * @param $redirectUrl
     * @param $number
     * @return string
     */
    function createOauthOpenidAndMoreUrlForCode($redirectUrl,$number)
    {
        $urlObj["appid"] = Config::get('WECHAT_APPID');
        $urlObj["redirect_uri"] = urlencode($redirectUrl);
        $urlObj["response_type"] = "code";
        $urlObj["scope"] = "snsapi_userinfo";
        $urlObj["state"] = "$number"."#wechat_redirect";
        $bizString = $this->formatBizQueryParaMap($urlObj, false);
        return "https://open.weixin.qq.com/connect/oauth2/authorize?".$bizString;
    }

    /**
     * 	作用：生成可以获得openid的url
     */
    function createOauthUrlForOpenid()
    {
        $urlObj["appid"] = Config::get('WECHAT_APPID');
        $urlObj["secret"] = Config::get('WECHAT_APPSECRET');
        $urlObj["code"] = $this->code;
        $urlObj["grant_type"] = "authorization_code";
        $bizString = $this->formatBizQueryParaMap($urlObj, false);
        return "https://api.weixin.qq.com/sns/oauth2/access_token?".$bizString;
    }

    function httpPost($url){
        //初始化curl
        $ch = curl_init();
        //设置超时
        //curl_setopt($ch, CURLOP_TIMEOUT, $this->curl_timeout);
        curl_setopt($ch, CURLOPT_URL, $url);
        curl_setopt($ch,CURLOPT_SSL_VERIFYPEER,FALSE);
        curl_setopt($ch,CURLOPT_SSL_VERIFYHOST,FALSE);
        curl_setopt($ch, CURLOPT_HEADER, FALSE);
        curl_setopt($ch, CURLOPT_RETURNTRANSFER, TRUE);
        //运行curl，结果以json形式返回
        $res = curl_exec($ch);
        curl_close($ch);
        //取出openid
        $data = json_decode($res,true);

        return $data;
    }

    /**
     * 	作用：通过curl向微信提交code，以获取openid
     */
    function getOpenidInfo()
    {
        $url = $this->createOauthUrlForOpenid();
        $data = $this->httpPost($url);
        return $data;
    }

    /**
     * 网页授权第四步：拉取用户信息
     * @param string $access_token
     * @param string $openid
     * @return bool|mixed
     */
    public function getOauthUserInfo($access_token='',$openid=''){
        if(empty($access_token)&& empty($openid)){
            return FALSE;
        }
        $url = 'https://api.weixin.qq.com/sns/userinfo?';
        $url .= 'access_token='.$access_token;
        $url .= '&openid='.$openid;
        $url .= '&lang=zh_CN';
        $res = $this->httpPost($url);
        if($res != FALSE){
            if(empty($res) || array_key_exists('errcode', $res)){
                return FALSE;
            }
            return $res;
        }
        return FALSE;
    }

    /**
     * 设置prepay_id
     * @param $prepayId
     */
    function setPrepayId($prepayId)
    {
        $this->prepay_id = $prepayId;
    }

    /**
     * 设置code
     * @param $code_
     */
    function setCode($code_)
    {
        $this->code = $code_;
    }

    /**
     * 	作用：设置jsapi的参数
     */
    public function getParameters()
    {
        $jsApiObj["appId"] = Config::get('WECHAT_APPID');
        $timeStamp = time();
        $jsApiObj["timeStamp"] = "$timeStamp";
        $jsApiObj["nonceStr"] = $this->createNoncestr();
        $jsApiObj["package"] = "prepay_id=$this->prepay_id";
        $jsApiObj["signType"] = "MD5";
        $jsApiObj["paySign"] = $this->getSign($jsApiObj);
        $this->parameters = json_encode($jsApiObj);

        return $this->parameters;
    }
}