微信支付逻辑
<?php namespace app\api\controller;use think\Controller;use think\Db;class WxPayController extends Controller{/*配置参数*/private $config = array('appid' => "", /*微信开放平台上的应用id*/'mch_id' => "", /*微信申请成功之后邮件中的商户id*/'api_key' => "" /*在微信商户平台上自己设定的api密钥 32位*/);//获取预支付订单public function getPrePayOrder($body, $out_trade_no, $total_fee, $notify_url){$url = "https://api.mch.weixin.qq.com/pay/unifiedorder";$onoce_str = $this->getRandChar(32);$data["appid"] = $this->config["appid"];$data["body"] = $body;$data["mch_id"] = $this->config['mch_id'];$data["nonce_str"] = $onoce_str;$data["notify_url"] = $notify_url;$data["out_trade_no"] = $out_trade_no;$data["spbill_create_ip"] = $this->get_client_ip();$data["total_fee"] = $total_fee;$data["trade_type"] = "APP";$s = $this->getSign($data, false);$data["sign"] = $s;$xml = $this->arrayToXml($data);$response = $this->postXmlCurl($xml, $url);//将微信返回的结果xml转成数组 return $this->xmlstr_to_array($response);// return xmlToArray($response); return $response; }//执行第二次签名,才能返回给客户端使用public function getOrder($prepayId){$data["appid"] = $this->config["appid"];$data["noncestr"] = $this->getRandChar(32);;$data["package"] = "Sign=WXPay";$data["partnerid"] = $this->config['mch_id'];$data["prepayid"] = $prepayId;$data["timestamp"] = time();$s = $this->getSign($data, false);$data["sign"] = $s;return $data; }/*生成签名*/function getSign($Obj) {foreach ($Obj as $k => $v) {$Parameters[strtolower($k)] = $v; }//签名步骤一:按字典序排序参数ksort($Parameters);$String = $this->formatBizQueryParaMap($Parameters, false);//echo "【string】 =".$String.""; //签名步骤二:在string后加入KEY$String = $String."&key=".$this->config['api_key'];//签名步骤三:MD5加密$result_ = strtoupper(md5($String));return $result_; }//获取指定长度的随机字符串function getRandChar($length){$str = null;$strPol = "ABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789abcdefghijklmnopqrstuvwxyz";$max = strlen($strPol)-1;for($i=0;$i<$length;$i++){$str.=$strPol[rand(0,$max)];//rand($min,$max)生成介于min和max两个数之间的一个随机整数 }return $str; }//数组转xmlfunction arrayToXml($arr) {if(!is_array($arr)|| count($arr) <= 0) {return false; }$xml = "<xml>";foreach ($arr as $key=>$val) {if (is_numeric($val)){$xml.="<".$key.">".$val."</".$key.">"; }else{$xml.="<".$key."><![CDATA[".$val."]]></".$key.">"; } }$xml.="</xml>";return $xml; }//post https请求,CURLOPT_POSTFIELDS xml格式function postXmlCurl($xml,$url,$second=30) {//初始化curl$ch = curl_init();//超时时间curl_setopt($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($ch,CURLOPT_SSL_VERIFYHOST,FALSE);//设置headercurl_setopt($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($ch);//返回结果if($data) { curl_close($ch);return $data; }else{$error = curl_errno($ch);echo "curl出错,错误码:$error"."";echo "错误原因查询"; curl_close($ch);return false; } }/*获取当前服务器的IP*/function get_client_ip() {if ($_SERVER['REMOTE_ADDR']) {$cip = $_SERVER['REMOTE_ADDR']; } elseif (getenv("REMOTE_ADDR")) {$cip = getenv("REMOTE_ADDR"); } elseif (getenv("HTTP_CLIENT_IP")) {$cip = getenv("HTTP_CLIENT_IP"); } else {$cip = "unknown"; }return $cip; }//将数组转成uri字符串function formatBizQueryParaMap($paraMap, $urlencode) {$buff = "";ksort($paraMap);foreach ($paraMap as $k => $v) {if($urlencode) {$v = urlencode($v); }$buff .= strtolower($k) . "=" . $v . "&"; }$reqPar;if (strlen($buff) > 0) {$reqPar = substr($buff, 0, strlen($buff)-1); }return $reqPar; }/* //xml转成数组 */function xmlstr_to_array($xmlstr) { //将XML转为array $array_data = json_decode(json_encode(simplexml_load_string($xmlstr, 'SimpleXMLElement', LIBXML_NOCDATA)), true); return $array_data; }function domnode_to_array($node) {$output = array();switch ($node->nodeType) {case XML_CDATA_SECTION_NODE:case XML_TEXT_NODE:$output = trim($node->textContent);break;case XML_ELEMENT_NODE:for ($i=0, $m=$node->childNodes->length; $i<$m; $i++) { $child = $node->childNodes->item($i);$v = $this->domnode_to_array($child);if(isset($child->tagName)) {$t = $child->tagName;if(!isset($output[$t])) {$output[$t] = array(); }$output[$t][] = $v; }elseif($v) {$output = (string) $v; } }if(is_array($output)) {if($node->attributes->length) {$a = array();foreach($node->attributes as $attrName => $attrNode) {$a[$attrName] = (string) $attrNode->value; }$output['@attributes'] = $a; }foreach ($output as $t => $v) {if(is_array($v) && count($v)==1 && $t!='@attributes') {$output[$t] = $v[0]; } } }break; }return $output; } }
调用方法
<?php
namespace app\api\controller;
use think\Request;use think\Db;// use think\Controller;use app\common\model\Order;class PayController extends Controller
{public function pay_order()
{$reoderSn = input('post.order_sn');$pay_type = input('post.pay_type');//判断支付方式switch ($pay_type) {case 'ali';//如果支付方式为支付宝支付break;case 'wx';$type['pay_type'] = 'wx';//更新支付方式为微信 $wx = new WxPayController();//实例化微信支付控制器$out_trade_no = $reoderSn;//订单号$list = Order::selOrderinfo($reoderSn);//查询订单金额,也可直接接口传$body = $list['order_details'];//支付说明$total_fee = $list['totle_sum'] * 100;//支付金额(乘以100)$notify_url = '';//回调地址$order = $wx->getPrePayOrder($body, $out_trade_no, $total_fee, $notify_url);//调用微信支付的方法if ($order['prepay_id']){//判断返回参数中是否有prepay_id$ordertwo = $wx->getOrder($order['prepay_id']);//执行二次签名返回参数
return success($ordertwo ,'成功');
} else {return error('失败');
}break;
}
}
}回调方法需要的可联系
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