/*** 直接生成微信jssdk_config* @echo string $jssdk Jssdk_config* @author 5heAtMin9 <sheatming@foxmail.com>*/function wx_jssdk_config($debug='true'){$getSignPackage = wx_getSignPackage();$jssdk = '<script src="https://res.wx.qq.com/open/js/jweixin-1.0.0.js"></script>';$jssdk .= '<script>wx.config({debug: '.$debug.', appId: "'.$getSignPackage['appId'].'",timestamp: "'.$getSignPackage['timestamp'].'",nonceStr: "'.$getSignPackage['nonceStr'].'",signature: "'.$getSignPackage['signature'].'",jsApiList: ["checkJsApi","onMenuShareTimeline","onMenuShareAppMessage","onMenuShareQQ", "onMenuShareWeibo","onMenuShareQZone","hideMenuItems","showMenuItems","hideAllNonBaseMenuItem","showAllNonBaseMenuItem","translateVoice","startRecord","stopRecord","onVoiceRecordEnd","playVoice","onVoicePlayEnd","pauseVoice","stopVoice","uploadVoice","downloadVoice","chooseImage","previewImage","uploadImage","downloadImage","getNetworkType","openLocation","getLocation","hideOptionMenu","showOptionMenu","closeWindow","scanQRCode","chooseWXPay","openProductSpecificView","addCard","chooseCard","openCard"],});
</script>';echo $jssdk;
}

/*** 微信支付* @param string $openid 支付者openid* @param string $url 回调地址* @param string $od_title 订单标题* @param string $od_money 价格* @param string $od_id 订单编号* @return string 状态* @author 5heAtMin9 <sheatming@foxmail.com>*/
function wx_h5_pay($openid, $url, $od_title,  $od_money, $od_id)
{if(is_null($url) || $url == ''){$url = 'http://'. $_SERVER['HTTP_HOST'].'/weixinpay/notify_url.php';}$pay = array('appid' => C('WX_APPID'),'mch_id' => C('WX_MCHID'),'nonce_str' => getRandom(32),'body' => $od_title,'out_trade_no' => $od_id,'total_fee' => $od_money * 100,'spbill_create_ip' => get_client_ip(),'notify_url' => $url,//通知地址'trade_type' => 'JSAPI','openid' => $openid,);ksort($pay);$string =  ToUrlParams($pay).'&key='.C('WX_PAYAPIKEY');$string = md5($string);$string = strtoupper($string);$pay['sign'] = $string;$postObj = simplexml_load_string(os_post('https://api.mch.weixin.qq.com/pay/unifiedorder', arrayToXml($pay)), 'SimpleXMLElement', LIBXML_NOCDATA);$time = time();$timeStamp = "$time";$nonceStr = getRandom(32);$data['package'] = 'prepay_id='.$postObj -> prepay_id;$data['timestamp'] = $timeStamp;$data['nonceStr'] = $nonceStr;$val = 'appId='.C('WX_APPID').'&';$val .='nonceStr='.$nonceStr.'&';$val .='package='.$data['package'].'&';$val .='signType=MD5&';$val .='timeStamp='.$timeStamp;$stringA = $val.'&key='.C('WX_PAYAPIKEY');$data['sign'] = strtoupper(MD5($stringA));$data['val'] = $val;return $data;
}

<?php
/*** Created by PhpStorm.* User: Kuoer* Date: 2016/4/9* Time: 14:41*/function payok($orderid, $alipayid, $openid, $total_fee, $type)
{    $postUrl =  'http://'.$_SERVER['HTTP_HOST'].'/index.php?s=/Home/Pay/weixinpay';$curlPost = 'orderid=' . $orderid . '&alipayid=' . $alipayid . '&openid=' . $openid;$ch = curl_init();curl_setopt($ch, CURLOPT_URL, $postUrl);                 //抓取指定网页curl_setopt($ch, CURLOPT_HEADER, 0);                    //设置headercurl_setopt($ch, CURLOPT_RETURNTRANSFER, 0);            //要求结果为字符串且输出到屏幕上curl_setopt($ch, CURLOPT_POST, 1);                      //post提交方式curl_setopt($ch, CURLOPT_POSTFIELDS, $curlPost);curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, FALSE);        // 终止从服务端进行验证curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, FALSE);curl_exec($ch);                                 //运行curlcurl_close($ch);
}header('Access-Control-Allow-Origin: *');header('Access-Control-Allow-Headers: X-Requested-With');$xml = file_get_contents("php://input");$xml = simplexml_load_string($xml);//return (string)$xml->prepay_id;$success = (string)$xml->return_code;if ($success == 'SUCCESS') {$out_trade_no = (string)$xml->out_trade_no;$trade_no = (string)$xml->transaction_id;$openid = (string)$xml->openid;$pay = (string)$xml->total_fee;echo payok($out_trade_no, $trade_no, $openid, $pay, 'weixin');} else {$return_code = (string)$xml->return_code;$return_msg = (string)$xml->return_msg;echo '<xml><return_code><![CDATA[' . $return_code . ']]></return_code><return_msg><![CDATA[' . $return_msg . ']]></return_msg></xml>';}

function quzhi( $s, $xml ) {$str = explode( '<' . $s . '>', $xml );$str = explode( '</' . $s . '>', $str[ 1 ] );return guolv( trim( $str[ 0 ] ) );
}function guolv( $str ) {$s = array( '!', '-', '[', 'CDATA', ']', '<', '>' );return str_replace( $s, '', $str );
}

<?php
namespace Home\Controller;
use Think\Controller;
use User\Api\UserApi;class PayController extends HomeController {protected function _initialize(){/* 读取站点配置 */$config = api('Config/lists');C($config); //添加配置
     }public function weixinpay(){$orderid = I('orderid');$suijishu = rand(100000000,99999999999);$val = 'appid='.C('WX_APPID').'&';$val .='mch_id='.C('WX_MCHID').'&';$val .='nonce_str='.$suijishu.'&';$val .='out_trade_no='.$orderid;$stringA = $val.'&key='.C('WX_PAYAPIKEY');$url = 'https://api.mch.weixin.qq.com/pay/orderquery';$post_data = '<xml><appid>'.C('WX_APPID').'</appid><mch_id>'.C('WX_MCHID').'</mch_id><nonce_str>'.$suijishu.'</nonce_str><out_trade_no>'.$orderid.'</out_trade_no><sign>'.strtoupper(MD5($stringA)).'</sign></xml>';$ch = curl_init();curl_setopt($ch, CURLOPT_POST, 1);curl_setopt($ch, CURLOPT_HEADER, false);curl_setopt($ch, CURLOPT_URL,$url);curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1); //要求结果为字符串且输出到屏幕上curl_setopt($ch, CURLOPT_POSTFIELDS, $post_data);curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false); //不验证证书curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, false); //不验证证书$res = curl_exec($ch);curl_close($ch);//上面都是固定死的，下面才开始写你要修改的数据if(quzhi('trade_state',$res) == 'SUCCESS'){$orderid = I('orderid');$data['gwc_danhao'] = I('orderid');$data['money'] = quzhi('total_fee',$res);$data['liushui_hao'] = quzhi('transaction_id',$res);$on = M('yy_pay')->where($data)->find();//没有找到这条数据就去执行下面的添加if(!$on){$gwc_id['danhao'] = I('orderid');$gwc_uid = M('yy_goumai')->where($gwc_id)->getField('uid');$data['uid'] = $gwc_uid;$data['time'] = time();M('yy_pay')->add($data);$price = M('yy_goumai')->where($gwc_id)->sum('zongjia');if($price*100 != $data['money']){$this->error('支付异常');}else{$gouwuche = M('yy_goumai')->where($gwc_id)->select();foreach($gouwuche as $k=>$v){$gwc_zt['utime']=time();$gwc_zt['state']=1;M('yy_goumai')->where(array('id'=>$v['id']))->setField($gwc_zt);}}}}}
}

/*** 检测用户是否登录* @return integer 0-未登录，大于0-当前登录用户ID* @author 麦当苗儿 <zuojiazi@vip.qq.com>*/
function is_login(){$user = session('user_auth');if (empty($user)) {return 0;} else {return session('user_auth');}
}

/*** 检测用户是否微信登录* @return integer 0-未登录，大于0-当前登录用户ID* @author 5heAtMin9 <sheatming@foxmail.com>*/function is_wx_login(){$backurl = 'http://' . $_SERVER['HTTP_HOST'] . $_SERVER['PHP_SELF'] . '?' . $_SERVER['QUERY_STRING'];$puid = I('sharecode',0);if(!is_login()){if(I('get.code')){$code = I('get.code');$appid = C('WX_APPID');$secret = C('WX_APPSECRET');$api = 'https://api.weixin.qq.com/sns/oauth2/access_token?appid=' . $appid . '&secret=' . $secret . '&code=' . $code . '&grant_type=authorization_code';$json = os_get($api);$array = json_decode($json, true);//
            $openid = $array['openid'];$token = $array['access_token'];//
            $where['openid'] = $openid;$user = M('ucenter_member')->where($where)->find();if(!$user){//没注册$api = 'https://api.weixin.qq.com/sns/userinfo?access_token=' . $token . '&openid=' . $openid . '&lang=zh_CN';$json = os_get($api);$array = json_decode($json, true);$tmp = rand(11111111111,99999999999);$access_info = array('type' => '2', //1.普通账号  2.微信账号  3.手机号  4.邮箱'username' => $tmp, //微信注册 随机分配账号'openid' => $openid,'email' => $tmp.'@rand.com','status' => 1,'reg_time' => time(),);$uid = M('ucenter_member') -> add($access_info);$user_info = array('uid' => $uid,'openid' => $array['openid'],'nickname' => $array['nickname'],'sex' => $array['sex'],'country' => $array['country'],'city' => $array['city'],'province' => $array['province'],'headimgurl' => $array['headimgurl'],'puid' => $puid,'status' => 1);$re = M('member') -> add($user_info);session('user_auth',$uid);$url = str_replace('Home/', '', U('wechat.php?User/login', array('openid' => $openid,'backurl'=>urlencode($backurl),'y' => md5(time().'5heAtMin9'))));redirect($url);
//
            } else {session('user_auth',$user['id']);//注册了 跳转到登陆界面$url = str_replace('Home/', '', U('wechat.php?User/login', array('openid' => $openid,'backurl'=>urlencode($backurl),'y' => md5(time().'5heAtMin9'))));redirect($url);return $url;}//return $array;} else {$appid = C('WX_APPID');redirect('https://open.weixin.qq.com/connect/oauth2/authorize?appid='.$appid.'&redirect_uri='.urlencode($backurl).'&response_type=code&scope=snsapi_userinfo&state=STATE#wechat_redirect');}} else {return is_login();}
}

 public function tuikuan(){$wher['id'] =I('id');$data['gwc_danhao'] = M('yy_goumai')->where($wher)->getField('danhao');$re = M('yy_pay')->where($data)->find();if($re){$gwc_arr['danbao'] = $re['gwc_danhao'];$gm = M('yy_goumai')->where($gwc_arr)->find();//退款需要用的商品总价
//            $gwc_tui_id = M('yy_goumai')->where(array('id'=>I('id')))->find();//退款需要用的商品单价(不是加上邮费的后的总金额)
//            dump($gwc_tui_id);die();$suijishu = time().rand(111111111,999999999).$gm['danhao'];//退款需要用的随机数//1.退款商品的单价(不是加上邮费的后的总金额)，2.支付成功后生成的流水单号，3.微信支付平台上要显示的流水号，(用时间戳 + 随机数 +　用户id);4.总价格。$tuikuan = wx_tuikuan($gm['danjia'],$re['liushui_hao'],$suijishu,$gm['zongjia']);if($tuikuan -> result_code == 'SUCCESS'){M('yy_pay')->where($data)->setField('tuikuan','1');$gwc_zt['state'] = '-2';$gwc_zt['utime'] = time();$yes = M('yy_goumai')->where($wher)->setField($gwc_zt);if($yes){$this->success('退款成功');}else{$this->error('退款失败');}}}else{$this->error('出错啦！订单号参数值不对！');}}

/*** 微信退款* @param $od_money 退款金额* @param $od_id 订单编号* @return SimpleXMLElement*/
function wx_tuikuan( $od_money, $od_id, $back_id, $zhifu ) {$pay = array('appid' => C( 'WX_APPID' ),'mch_id' => C( 'WX_MCHID' ),'nonce_str' => getRandom( 32 ),'op_user_id' => C( 'WX_MCHID' ),'out_refund_no' => $back_id,'transaction_id' => $od_id,'refund_fee' => $od_money * 100,'total_fee' => $zhifu * 100,);ksort( $pay );$string = ToUrlParams( $pay ) . '&key=' . C( 'WX_PAYAPIKEY' );$string = md5( $string );$string = strtoupper( $string );$pay[ 'sign' ] = $string;$tmp = zhifu( 'https://api.mch.weixin.qq.com/secapi/pay/refund', arrayToXml( $pay ) );
//    dump($tmp);die();$postObj = simplexml_load_string( $tmp, 'SimpleXMLElement', LIBXML_NOCDATA );return $postObj;}

/*** 微信退款* @param $od_money 退款金额* @param $od_id 订单编号* @return SimpleXMLElement*/
function wx_refund($od_money, $od_id, $back_id)
{$pay = array('appid' => C('WX_APPID'),'mch_id' => C('WX_MCHID'),'nonce_str' => getRandom(32),'op_user_id' => C('WX_MCHID'),'out_refund_no' => $back_id,'out_trade_no' => $od_id,'refund_fee' => $od_money * 100,'total_fee' => $od_money * 100,);ksort($pay);$string =  ToUrlParams($pay).'&key='.C('WX_PAYAPIKEY');$string = md5($string);$string = strtoupper($string);$pay['sign'] = $string;$tmp = zhifu('https://api.mch.weixin.qq.com/secapi/pay/refund', arrayToXml($pay));$postObj = simplexml_load_string($tmp, 'SimpleXMLElement', LIBXML_NOCDATA);return $postObj;
}