微信支付统一下单，用PHP怎么实现？（代码全）
H5支付时出现“签名错误”怎么办？注意调用微信“统一下单”接口后返回pre_pay_id后，需要用户再次进行签名返回给HTML； “支付目录没有授权”，进入微信商家管理后台设置即可。
一、Model层，Wxpay.php<?phpnamespace appcommonmodel;class Wxpay{private $appid = 'wxe8*****d4';//微信公众号appidprivate $secret = '37c4*******5f0';//微信公众号appsecretprivate $mchid = '13******02';//商家号private $key = '5363e******49e8';//支付密钥private $sslcert_path = 'apiclient_cert.pem';//证书所在绝对路径private $sslkey_path = 'apiclient_key.pem';//证书所在绝对路径public function __construct($appid = '', $secret = '', $mchid = '', $key = ''){if(!empty($appid))$this->appid = $appid;if(!empty($secret))$this->secret = $secret;if(!empty($mchid))$this->mchid= $mchid;if(!empty($key))$this->key= $key;}/** 微信内H5调起支付* @params string $openid : 微信用户openid* @params string $out_trade_no : 商家生成的订单号（唯一性）* @params int $total_fee : 支付金额，单位分* return array $ret : 返回支付时所需要的数据* */public function payForWeixin($openid,$out_trade_no,$total_fee,$attach='微信支付',$body='微信支付'){//支付数据$data['openid'] = $openid;$data['out_trade_no'] = $out_trade_no;$data['total_fee'] = $total_fee*100;$data['spbill_create_ip'] = $_SERVER["REMOTE_ADDR"];$data['attach'] = $attach;$data['body'] = $body;$data['appid'] = $this->appid;$data['mch_id'] = $this->mchid;$data['nonce_str'] = random(12);$data['trade_type'] = "JSAPI";$data['notify_url'] = "http://****.com/home/wxpaynofiy/notify.html";$sign = $this->getParam($data);$dataXML = "<xml><appid>".$data['appid']."</appid><attach>".$data['attach']."</attach><body>".$data['body']."</body><mch_id>".$data['mch_id']."</mch_id><nonce_str>".$data['nonce_str']."</nonce_str><notify_url>".$data['notify_url']."</notify_url><openid>".$data['openid']."</openid><out_trade_no>".$data['out_trade_no']."</out_trade_no><spbill_create_ip>".$data['spbill_create_ip']."</spbill_create_ip><total_fee>".$data['total_fee']."</total_fee><trade_type>".$data['trade_type']."</trade_type><sign>".$sign."</sign></xml>";$url = 'https://api.mch.weixin.qq.com/pay/unifiedorder';$result =$this->https_post($url,$dataXML);$ret = $this->xmlToArray($result);if($ret['return_code'] == 'SUCCESS' && $ret['return_msg'] == 'OK') {return array('appId'=> $this->appid,'timeStamp' => time(),'nonceStr'=> $data['nonce_str'],'package'=> 'prepay_id='.$ret['prepay_id'],'signType'=> 'MD5','paySign'=> $sign);} else {$this->errorLog("微信支付失败，",$ret);return null;}}/**微信二维码支付*@params string $openid : 用户的openid*@params string $out_trade_no : 商户订单号*@params number $total_fee : 订单金额，单位分*return string $code_url : 二维码URL链接*/public function payForQrcode($out_trade_no,$total_fee,$body="魔盒CMS",$attach="微信支付"){//支付数据$data['out_trade_no'] = $out_trade_no;$data['total_fee'] = $total_fee*100;$data['spbill_create_ip'] = $_SERVER["REMOTE_ADDR"];$data['attach'] = $attach;$data['body'] = $body;$data['appid'] = $this->appid;$data['mch_id'] = $this->mchid;$data['nonce_str'] = random(12);$data['trade_type'] = "NATIVE";$data['notify_url'] = "http://****.com/home/wxpaynofiy/notify.html";$sign = $this->getParam($data);$dataXML = "<xml><appid>".$data['appid']."</appid><attach>".$data['attach']."</attach><body>".$data['body']."</body><mch_id>".$data['mch_id']."</mch_id><nonce_str>".$data['nonce_str']."</nonce_str><notify_url>".$data['notify_url']."</notify_url><out_trade_no>".$data['out_trade_no']."</out_trade_no><spbill_create_ip>".$data['spbill_create_ip']."</spbill_create_ip><total_fee>".$data['total_fee']."</total_fee><trade_type>".$data['trade_type']."</trade_type><sign>".$sign."</sign></xml>";$url = 'https://api.mch.weixin.qq.com/pay/unifiedorder';$result =$this->https_post($url,$dataXML);$ret = $this->xmlToArray($result);if($ret['return_code'] == 'SUCCESS' && $ret['return_msg'] == 'OK') {return $ret['code_url'];} else {$this->errorLog("获取微信支付二维码失败，",$ret);return null;}}/** 订单查询* @params string $transaction_id : 微信订单号* @params string $out_trade_no : 商家订单号（与微信订单号二选一）* */public function findOrder($out_trade_no){$data['appid'] = $this->appid;$data['mch_id'] = $this->mchid;$data['nonce_str'] = random(12);$data['out_trade_no'] = $out_trade_no;$sign = $this->getParam($data);$dataXML = "<xml><appid>".$data['appid']."</appid><mch_id>".$data['mch_id']."</mch_id><nonce_str>".$data['nonce_str']."</nonce_str><out_trade_no>".$data['out_trade_no']."</out_trade_no><sign>".$sign."</sign></xml>";$url = 'https://api.mch.weixin.qq.com/pay/orderquery';$result =$this->https_post($url,$dataXML);$ret = $this->xmlToArray($result);if($ret['return_code'] == 'SUCCESS' && $ret['return_msg'] == 'OK') {return $ret;} else {$this->errorLog("查询微信支付订单失败，",$ret);return null;}}/** 退款订单查询* @params string $transaction_id : 微信订单号* @params string $out_trade_no : 商家订单号（与微信订单号二选一）* */public function findRefundOrder($out_trade_no){$data['appid'] = $this->appid;$data['mch_id'] = $this->mchid;$data['nonce_str'] = random(12);$data['out_trade_no'] = $out_trade_no;$sign = $this->getParam($data);$dataXML = "<xml><appid>".$data['appid']."</appid><mch_id>".$data['mch_id']."</mch_id><nonce_str>".$data['nonce_str']."</nonce_str><out_trade_no>".$data['out_trade_no']."</out_trade_no><sign>".$sign."</sign></xml>";$url = 'https://api.mch.weixin.qq.com/pay/refundquery';$result =$this->https_post($url,$dataXML);$ret = $this->xmlToArray($result);if($ret['return_code'] == 'SUCCESS' && $ret['return_msg'] == 'OK') {return $ret;} else {$this->errorLog("查询微信支付退款订单失败，",$ret);return $ret['err_code_des'];}}/** 申请退款* @params string $out_trade_no : 商户订单号* @params string $out_refund_no : 商户退款单号* @params int $total_fee : 订单金额* @params int $refund_fee : 退款金额* @params string $refund_desc : 退款原因* */public function refund($out_trade_no,$out_refund_no,$total_fee,$refund_fee,$refund_desc='退款'){$data['appid']= $this->appid;$data['mch_id'] = $this->mchid;$data['nonce_str'] = random(12);$data['out_trade_no'] = $out_trade_no;$data['out_refund_no'] = $out_refund_no;$data['total_fee'] = $total_fee*100;$data['refund_fee'] = $refund_fee*100;$data['refund_desc'] = $refund_desc;$data['notify_url'] = "http://*****.com/home/wxpaynofiy/refund.html";$sign = $this->getParam($data);$dataXML = "<xml><appid>".$data['appid']."</appid><mch_id>".$data['mch_id']."</mch_id><nonce_str>".$data['nonce_str']."</nonce_str><out_trade_no>".$data['out_trade_no']."</out_trade_no><out_refund_no>".$data['out_refund_no']."</out_refund_no><total_fee>".$data['total_fee']."</total_fee><refund_fee>".$data['refund_fee']."</refund_fee><refund_desc>".$data['refund_desc']."</refund_desc><notify_url>".$data['notify_url']."</notify_url><sign>".$sign."</sign></xml>";$url = 'https://api.mch.weixin.qq.com/secapi/pay/refund';$result =$this->https_post($url,$dataXML,true);$ret = $this->xmlToArray($result);if($ret['return_code'] == 'SUCCESS' && $ret['return_msg'] == 'OK') {return $ret;} else {$this->errorLog("微信退款失败，",$ret);return null;}}/** 企业付款至用户零钱* @params string $openid : 用户openid* @params int $total_fee : 付款金额，单位分* @params string $out_trade_no : 商家订单号* @params string $username : 微信用户名称（注意微信昵称若为空时支付会出错）* @params string $desc : 付款描述* @params string $check_name : 是否检测用户名* */public function payForUser($openid,$total_fee,$out_trade_no,$username='魔盒CMS',$desc='魔盒CMS付款给用户',$check_name='NO_CHECK'){$data['amount'] = $total_fee*100;$data['check_name'] = $check_name;$data['desc'] = $desc;$data['mch_appid'] = $this->appid;$data['mchid'] = $this->mchid;$data['nonce_str'] = random(12);$data['openid'] = $openid;$data['partner_trade_no'] = $out_trade_no;$data['re_user_name'] = $username;$data['spbill_create_ip'] = $_SERVER["REMOTE_ADDR"];$sign = $this->getParam($data);$dataXML="<xml><mch_appid>".$data['mch_appid']."</mch_appid><mchid>".$data['mchid']."</mchid><nonce_str>".$data['nonce_str']."</nonce_str><partner_trade_no>".$data['partner_trade_no']."</partner_trade_no><openid>".$data['openid']."</openid><check_name>".$data['check_name']."</check_name><re_user_name>".$data['re_user_name']."</re_user_name><amount>".$data['amount']."</amount><desc>".$data['desc']."</desc><spbill_create_ip>".$data['spbill_create_ip']."</spbill_create_ip><sign>".$sign."</sign></xml>";$url = 'https://api.mch.weixin.qq.com/mmpaymkttransfers/promotion/transfers';$result =$this->https_post($url,$dataXML,true);$ret = $this->xmlToArray($result);if($ret['return_code']=='SUCCESS' && $ret['result_code'] == 'SUCCESS'){//支付成功返回商户订单号、微信订单号、微信支付成功时间$result['partner_trade_no'] = $ret['partner_trade_no'];$result['payment_no'] = $ret['payment_no'];$result['payment_time'] = $ret['payment_time'];return $ret;} else {$this->errorLog('付款给用户失败',$ret);return null;}}/** 普通红包* @params string $out_trade_no : 商家订单号* @params string $openid : 接收红包用户的openid* @params int $total_fee : 红包金额，单位分* @params int $total_num : 红包发放总人数* @params string $wishing : 红包祝福语* @params string $act_name : 活动名称* @params string $remark : 备注* @params string $scene_id ：场景值ID。发放红包使用场景，红包金额大于200或者小于1元时必传。PRODUCT_1:商品促销、PRODUCT_2:抽奖、PRODUCT_3:虚拟物品兑奖 、PRODUCT_4:企业内部福利、PRODUCT_5:渠道分润、PRODUCT_6:保险回馈、PRODUCT_7:彩票派奖、PRODUCT_8:税务刮奖* */public function redPack($openid,$total_fee,$out_trade_no,$total_num = 1,$wishing = '感谢您光临***平台进行购物',$act_name='***购物发红包',$remark = '购物领红包'){$data['mch_billno']= $out_trade_no;$data['mch_id']= $this->mchid;$data['wxappid']= $this->appid;$data['send_name']= '发送红包者的名称';$data['re_openid']= $openid;$data['total_amount']= $total_fee;$data['total_num']= $total_num;$data['wishing']= $wishing;$data['client_ip']= $_SERVER["REMOTE_ADDR"];$data['act_name']= $act_name;$data['remark']= $remark;$data['nonce_str']= random(12);$sign = $this->getParam($data);$dataXML="<xml><sign>".$sign."</sign><mch_billno>".$data['mch_billno']."</mch_billno><mch_id>".$data['mch_id']."</mch_id><wxappid>".$data['wxappid']."</wxappid><send_name>".$data['send_name']."</send_name><re_openid>".$data['re_openid']."</re_openid><total_amount>".$data['total_amount']."</total_amount><total_num>".$data['total_num']."</total_num><wishing>".$data['wishing']."</wishing><client_ip>".$data['client_ip']."</client_ip><act_name>".$data['act_name']."</act_name><remark>".$data['remark']."</remark><nonce_str>".$data['nonce_str']."</nonce_str></xml>";$url = 'https://api.mch.weixin.qq.com/mmpaymkttransfers/sendredpack';$result =$this->https_post($url,$dataXML,true);$ret = $this->xmlToArray($result);if($ret['return_code']=='SUCCESS' && $ret['result_code'] == 'SUCCESS'){return $ret;} else {$this->errorLog('发放普通红包失败',$ret);return $ret['err_code_des'];}}/** 裂变红包：一次可以发放一组红包。首先领取的用户为种子用户，种子用户领取一组红包当中的一个，并可以通过社交分享将剩下的红包给其他用户。* 裂变红包充分利用了人际传播的优势。* @params string $out_trade_no : 商家订单号* @params string $openid : 接收红包用户的openid* @params int $total_fee : 红包金额，单位分* @params int $total_num : 红包发放总人数* @params string $wishing : 红包祝福语* @params string $act_name : 活动名称* @params string $remark : 备注* @params string $scene_id ：场景值ID。发放红包使用场景，红包金额大于200或者小于1元时必传。PRODUCT_1:商品促销、PRODUCT_2:抽奖、PRODUCT_3:虚拟物品兑奖 、PRODUCT_4:企业内部福利、PRODUCT_5:渠道分润、PRODUCT_6:保险回馈、PRODUCT_7:彩票派奖、PRODUCT_8:税务刮奖* */public function redPackGroup($openid,$total_fee,$out_trade_no,$total_num,$wishing = '感谢您光临***进行购物',$act_name='**购物发红包',$remark = '购物领红包'){$data['mch_billno']= $out_trade_no;$data['mch_id']= $this->mchid;$data['wxappid']= $this->appid;$data['send_name']= '发送红包者的名称';$data['re_openid']= $openid;$data['total_amount']= $total_fee;$data['amt_type']= 'ALL_RAND';//ALL_RAND—全部随机,商户指定总金额和红包发放总人数，由微信支付随机计算出各红包金额$data['total_num']= $total_num;$data['wishing']= $wishing;$data['client_ip']= $_SERVER["REMOTE_ADDR"];$data['act_name']= $act_name;$data['remark']= $remark;$data['nonce_str']= random(12);$sign = $this->getParam($data);$dataXML="<xml><sign>".$sign."</sign><mch_billno>".$data['mch_billno']."</mch_billno><mch_id>".$data['mch_id']."</mch_id><wxappid>".$data['wxappid']."</wxappid><send_name>".$data['send_name']."</send_name><re_openid>".$data['re_openid']."</re_openid><total_amount>".$data['total_amount']."</total_amount><amt_type>".$data['amt_type']."</amt_type><total_num>".$data['total_num']."</total_num><wishing>".$data['wishing']."</wishing><client_ip>".$data['client_ip']."</client_ip><act_name>".$data['act_name']."</act_name><remark>".$data['remark']."</remark><nonce_str>".$data['nonce_str']."</nonce_str></xml>";$url = 'https://api.mch.weixin.qq.com/mmpaymkttransfers/sendgroupredpack';$result =$this->https_post($url,$dataXML,true);$ret = $this->xmlToArray($result);if($ret['return_code']=='SUCCESS' && $ret['result_code'] == 'SUCCESS'){return $ret;} else {$this->errorLog('发放裂变红包失败',$ret);return $ret['err_code_des'];}}/** 查询红包记录* @params string $out_trade_no : 商家订单号* */public function findRedPack($out_trade_no){$data['mch_billno']= $out_trade_no;$data['mch_id']= $this->mchid;$data['appid']= $this->appid;$data['bill_type']= 'MCHT';//MCHT:通过商户订单号获取红包信息。$data['nonce_str']= random(12);$sign = $this->getParam($data);$dataXML="<xml><sign>".$sign."</sign><mch_billno>".$data['mch_billno']."</mch_billno><mch_id>".$data['mch_id']."</mch_id><appid>".$data['appid']."</appid><bill_type>".$data['bill_type']."</bill_type><nonce_str>".$data['nonce_str']."</nonce_str></xml>";$url = 'https://api.mch.weixin.qq.com/mmpaymkttransfers/gethbinfo';$result =$this->https_post($url,$dataXML,true);$ret = $this->xmlToArray($result);if($ret['return_code']=='SUCCESS' && $ret['result_code'] == 'SUCCESS'){return $ret;} else {$this->errorLog('查询红包记录失败',$ret);return $ret['err_code_des'];}}/** 获取用户微信的OPENID* */public function openid($c=false){if($_GET['state']!="zgm"){$t = $c ? "snsapi_userinfo" : "snsapi_base";$url=urlencode(get_url());$url="https://open.weixin.qq.com/connect/oauth2/authorize?appid=".$this->appid."&redirect_uri=".$url."&response_type=code&scope=".$t."&state=zgm#wechat_redirect";echo "<html><script>window.location.href='$url';</script></html>";exit;}if($_GET['code']){$url="https://api.weixin.qq.com/sns/oauth2/access_token?appid=".$this->appid."&secret=".$this->secret."&code=".$_GET['code']."&grant_type=authorization_code";$wx_db=json_decode($this->https_get($url));if($c){$url_2="https://api.weixin.qq.com/sns/userinfo?access_token=".$wx_db->access_token."&openid=".$wx_db->openid."&lang=zh_CN";$db=json_decode($this->https_get($url_2));return $db;}else{return $wx_db->openid;}}}/** 发起网络GET请求* @params string $url : URL链接*/private function https_get($url){$curl = curl_init();curl_setopt($curl, CURLOPT_URL, $url);curl_setopt($curl, CURLOPT_RETURNTRANSFER, TRUE);curl_setopt($curl, CURLOPT_SSL_VERIFYPEER, FALSE);curl_setopt($curl, CURLOPT_SSL_VERIFYHOST, FALSE);curl_setopt($curl, CURLOPT_HEADER, FALSE) ;curl_setopt($curl, CURLOPT_TIMEOUT,60);if (curl_errno($curl)) {return 'Errno'.curl_error($curl);}else{$result=curl_exec($curl);}curl_close($curl);return $result;}//对参数排序，生成MD5加密签名private function getParam($paramArray, $isencode=false){$paramStr = '';ksort($paramArray);$i = 0;foreach ($paramArray as $key => $value){if ($key == 'Signature'){continue;}if ($i == 0){$paramStr .= '';}else{$paramStr .= '&';}$paramStr .= $key . '=' . ($isencode?urlencode($value):$value);++$i;}$stringSignTemp=$paramStr."&key=".$this->key;$sign=strtoupper(md5($stringSignTemp));return $sign;}//POST提交数据private function https_post($url,$data,$ssl = false){$ch = curl_init ();curl_setopt ( $ch, CURLOPT_URL, $url );curl_setopt ( $ch, CURLOPT_CUSTOMREQUEST, "POST" );curl_setopt ( $ch, CURLOPT_SSL_VERIFYPEER, FALSE );curl_setopt ( $ch, CURLOPT_SSL_VERIFYHOST, FALSE );if($ssl) {curl_setopt ( $ch,CURLOPT_SSLCERT,$this->sslcert_path);curl_setopt ( $ch,CURLOPT_SSLKEY,$this->sslkey_path);}curl_setopt ( $ch, CURLOPT_FOLLOWLOCATION, 1 );curl_setopt ( $ch, CURLOPT_AUTOREFERER, 1 );curl_setopt ( $ch, CURLOPT_POSTFIELDS, $data );curl_setopt ( $ch, CURLOPT_RETURNTRANSFER, true );$result = curl_exec($ch);if (curl_errno($ch)) {return 'Errno: '.curl_error($ch);}curl_close($ch);return $result;}/** XML转array* @params xml $xml : xml 数据* return array $data : 转义后的array数组*/private function xmlToArray($xml){libxml_disable_entity_loader(true);$xmlstring = simplexml_load_string($xml, 'SimpleXMLElement', LIBXML_NOCDATA);$val = json_decode(json_encode($xmlstring),true);return $val;}/** 记录日志* @params string $msg : 提示语句* @params array $ret : 错误结果*/private function errorLog($msg,$ret){file_put_contents(ROOT_PATH . 'runtime/error/wxpay.log', "[" . date('Y-m-d H:i:s') . "] ".$msg."," .json_encode($ret).PHP_EOL, FILE_APPEND);}}二、Controller层，Test.php<?phpnamespace appgoodscontroller;use appcommonmodelWxpay;class Test{/** 调用微信支付* 一、获取微信用户的openid;* 二、调用微信支付接口* 三、生成H5中使用的签名内容*/public function wx(){$wxpay = new Wxpay();$openid = $wxpay->openid();$pay = $wxpay->payForWeixin($openid,date('YmdHis').rand(1,5),'0.1');$paySign =strtoupper(MD5('appId='.$pay['appId'].'&nonceStr='.$pay['nonceStr'].'&package='.$pay['package'].'&signType=MD5&timeStamp='.$pay['timeStamp'].'&key=536*****9e8'));$h5 = array('appId'=> $pay['appId'],'timeStamp' => $pay['timeStamp'],'nonceStr'=> $pay['nonceStr'],'package'=> $pay['package'],'signType'=> $pay['signType'],'paySign'=> $paySign);$this->assign('wxpay',$h5);return view();}}三、HTML中调用微信支付，wx.html<!DOCTYPE html><html lang="en"><head><meta charset="UTF-8"><title>订单示例</title></head><body><script type="text/javascript">function onBridgeReady(){WeixinJSBridge.invoke('getBrandWCPayRequest', {"appId":"{$wxpay['appId']}","timeStamp":"{$wxpay['timeStamp']}","nonceStr":"{$wxpay['nonceStr']}","package":"{$wxpay['package']}","signType":"MD5","paySign":"{$wxpay['paySign']}"},function(res){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。}});}if (typeof WeixinJSBridge == "undefined"){if( document.addEventListener ){document.addEventListener('WeixinJSBridgeReady', onBridgeReady, false);}else if (document.attachEvent){document.attachEvent('WeixinJSBridgeReady', onBridgeReady);document.attachEvent('onWeixinJSBridgeReady', onBridgeReady);}}else{onBridgeReady();}</script></body></html>四、接收微信支付返回结果,支付时设置的notify_url值，确保此链接外网能访问。wxpaynofiy.php<?phpnamespace apphomecontroller;class Wxpaynofiy{public function notify(){$xml = isset($GLOBALS["HTTP_RAW_POST_DATA"]) ? $GLOBALS['HTTP_RAW_POST_DATA'] : file_get_contents("php://input");$data = xmlToArray($xml);if($data['return_code'] == 'SUCCESS' && $data['result_code'] == 'SUCCESS'){if($this->checkSign($data)) {$transaction_id = $data['transaction_id'];//微信支付订单号$out_trade_no= $data['out_trade_no'];//商家订单号$this->errorLog('微信支付返回结果,微信支付订单号：'.$transaction_id.'，商家订单号：'.$out_trade_no,[]);} else {$this->errorLog('微信支付返回结果签名验证失败',$data);}} else {$this->errorLog('微信支付返回结果',$data);}echo '<xml><return_code><![CDATA[SUCCESS]]></return_code><return_msg><![CDATA[OK]]></return_msg></xml>';}/** 验证签名* @params array $result : 微信支付成功返回的结果数组* return bool $ret : 成功true，失败false* */private function checkSign(array $data){$str = '';ksort($data);foreach ($data as $k => $v) {if($k != 'sign') $str .= $k.'='.$v.'&';}$temp = $str . 'key=5363******49e8';//key：商户支付密钥$sign = strtoupper(md5($temp));return $sign == $data['sign'] ? true : false;}private function errorLog($msg,$ret){file_put_contents(ROOT_PATH . 'runtime/error/wxpaynofiy.log', "[" . date('Y-m-d H:i:s') . "] ".$msg."," .json_encode($ret).PHP_EOL, FILE_APPEND);}}相关推荐：
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