微信jsapi支付

微信jsapi 支付可以直接使用 适合微信浏览器使用

//微信jsapi支付 前端
function paySign(){
if (typeof WeixinJSBridge == “undefined”){
$.post(’/mobile/index.php?m=user&a=DakaDoneBywx’,{},res=>{
console.log(res)
if(res.error_code == 10000){
// onBridgeReady(res.info);
}else{
alert(res.msg)
}
},‘json’)
}else{
$.post(’/mobile/index.php?m=user&a=DakaDoneBywx’,{},res=>{
if(res.error_code == 10000){
onBridgeReady(res.info);
}else{
alert(res.msg)
}
},‘json’)

}

}
function onBridgeReady(info){
WeixinJSBridge.invoke(
‘getBrandWCPayRequest’,{
“appId”:info.appId, //公众号名称，由商户传入
“timeStamp”:info.timeStamp, //时间戳，自1970年以来的秒数
“nonceStr”:info.nonceStr, //随机串
“package”:info.package,
“signType”:“MD5”, //微信签名方式：
“paySign”:info.paySign //微信签名
},
function(res){
alert(res.err_msg)
if(res.err_msg == “get_brand_wcpay_request:ok” ){
// 使用以上方式判断前端返回,微信团队郑重提示：
//res.err_msg将在用户支付成功后返回ok，但并不保证它绝对可靠。
}
});
}

//微信jsapi 支付 后端

public function actionDakaDoneBywx()
{
	// if(input('type') == )
	$order['user_id'] = $_SESSION['user_id'];
	$order['pay_status'] = 1;
	$order['pay_type'] = 'weixin';
	$order['pay_out_trade_no'] = date('YmdHis',time()).$_SESSION['user_id'];
	$order['pay_money'] = 1;
	$order['sign_type'] = 3;
	//微信支付参数构造
	$param['appid'] = 'XXXXXXXXXXX';
	$param['mch_id'] = '1497429492';
	$param['nonce_str'] = $this->createNoncestr();
	$param['body'] = "三级会员";
	$param['out_trade_no'] = $order['pay_out_trade_no'];
	$param['total_fee'] = 1;
	$param['spbill_create_ip'] = $this->get_client_ip();
	$param['notify_url'] = "https://XXXXXXXXXX";
	$param['trade_type'] = 'JSAPI';
	$param['sign_type'] = 'MD5';
	$param['openid'] = M('wechat_user')->where(['ect_uid'=>$_SESSION['user_id']])->find()['openid'];
	$param['sign'] = $this->getSign($param);
	$xml = $this->arrayToXml($param);
	$url = "https://api.mch.weixin.qq.com/pay/unifiedorder";
	$data = $this->postXmlCurl($xml,$url);
	$info = $this->xmlToArray($data);
	if($info['return_code'] == "SUCCESS" && $info['result_code'] == "SUCCESS"){
		$return['appId'] = $info['appid'];
		$return['timeStamp'] = time();
		$return['nonceStr'] = $info['nonce_str'];
		$return['package'] = "prepay_id=".$info['prepay_id'];
		$return['signType'] = 'MD5';
		$pay_sign = $this->getSign($return);
		$return['paySign'] = $pay_sign;
		exit(json_encode(array('info'=>$return,'error_code'=>10000,'msg'=>'请求成功','ss'=>$info)));
	}else{
		exit(json_encode(array('error_code'=>10001,'msg'=>'请求失败')));
	}
}

protected static function xmlToArray($xml){

    $array_data = json_decode(json_encode(simplexml_load_string($xml, 'SimpleXMLElement', LIBXML_NOCDATA)), true);

    return $array_data;

}

private static function postXmlCurl($xml, $url, $second = 30)

{

    $ch = curl_init();

    //设置超时

    curl_setopt($ch, CURLOPT_TIMEOUT, $second);

    curl_setopt($ch, CURLOPT_URL, $url);

    curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, FALSE);

    curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, FALSE); //严格校验

    //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);

    curl_setopt($ch, CURLOPT_CONNECTTIMEOUT, 20);

    curl_setopt($ch, CURLOPT_TIMEOUT, 40);

    set_time_limit(0);

    //运行curl

    $data = curl_exec($ch);

    //返回结果

    if ($data) {

        curl_close($ch);

        return $data;

    } else {

        $error = curl_errno($ch);

        curl_close($ch);

        throw new WxPayException("curl出错，错误码:$error");

    }

}

protected 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;

}

		/*

 *排序并格式化参数方法，签名时需要使用

 */

protected function formatBizQueryParaMap($paraMap, $urlencode)

{

    $buff = "";

    ksort($paraMap);

    foreach ($paraMap as $k => $v)

    {

        if($urlencode)

        {

            $v = urlencode($v);

        }

        //$buff .= strtolower($k) . "=" . $v . "&";

        $buff .= $k . "=" . $v . "&";

    }

    $reqPar = "";

    if (strlen($buff) > 0)

    {

        $reqPar = substr($buff, 0, strlen($buff)-1);

    }

    return $reqPar;

}



	/*

* 对要发送到微信统一下单接口的数据进行签名

*/

protected function getSign($Obj){

    foreach ($Obj as $k => $v){

        $param[$k] = $v;

    }

    //签名步骤一：按字典序排序参数

    ksort($param);

    $String = $this->formatBizQueryParaMap($param, false);

    //签名步骤二：在string后加入KEY

    $String = $String."&key=xxxxxxxxxxxxxxxx";//商户秘钥

    //签名步骤三：MD5加密

    $String = md5($String);

    //签名步骤四：所有字符转为大写

    $result_ = strtoupper($String);

    return $result_;

}


private 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;
}

private function get_client_ip()
{
	if ($_SERVER['REMOTE_ADDR']) {
		$cip = $_SERVER['REMOTE_ADDR'];
	}
	else if (getenv('REMOTE_ADDR')) {
		$cip = getenv('REMOTE_ADDR');
	}
	else if (getenv('HTTP_CLIENT_IP')) {
		$cip = getenv('HTTP_CLIENT_IP');
	}
	else {
		$cip = 'unknown';
	}

	return $cip;
}