<?php
namespace app\api\controller;
use think\Db;class WxPay{public function pay($body_name='',$order_number='',$fee='') {$wxdata = Db::name('wxpay')->find();$appid = $wxdata['appid']; //应用的appid$mch_id = $wxdata['mch_id']; // 您的商户账号$nonce_str = $this -> nonce_str(); //随机字符串$body = $body_name; // 举例: 服务预约$out_trade_no = $order_number; //商户订单号$total_fee = $fee*100;$spbill_create_ip = '122.114.62.70'; // IP白名单$notify_url = 'http://app.ggg.com/api/Notify/Wx_notify'; // 回调的url【自己填写,如若回调不成功请注意查看服务器是否开启防盗链,回调地址用http】$trade_type = 'APP'; //交易类型 默认//这里是按照顺序的 因为下面的签名是按照顺序 排序错误 肯定出错$post['appid'] = $appid;$post['body'] = $body;$post['mch_id'] = $mch_id;$post['nonce_str'] = $nonce_str; //随机字符串$post['notify_url'] = $notify_url;$post['out_trade_no'] = $out_trade_no;$post['spbill_create_ip'] = $spbill_create_ip; //终端的ip$post['total_fee'] = $total_fee; //总金额 最低为一块钱 必须是整数$post['trade_type'] = $trade_type;$sign = $this -> sign($post,$wxdata['key']); //签名$post_xml = "<xml><appid><![CDATA[$appid]]></appid><body><![CDATA[$body]]></body><mch_id><![CDATA[$mch_id]]></mch_id><nonce_str><![CDATA[$nonce_str]]></nonce_str><notify_url><![CDATA[$notify_url]]></notify_url><out_trade_no><![CDATA[$out_trade_no]]></out_trade_no><spbill_create_ip><![CDATA[$spbill_create_ip]]></spbill_create_ip><total_fee><![CDATA[$total_fee]]></total_fee><trade_type><![CDATA[$trade_type]]></trade_type><sign><![CDATA[$sign]]></sign></xml>";//统一接口prepay_id$url = 'https://api.mch.weixin.qq.com/pay/unifiedorder';$xml = $this -> http_request($url, $post_xml);$array = $this -> xml($xml); //全要大写// dump($array);die;if ($array['RETURN_CODE'] == 'SUCCESS' && $array['RESULT_CODE'] == 'SUCCESS') {$time = time();$tmp = []; //临时数组用于签名$tmp['appid'] = $appid;$tmp['noncestr'] = $nonce_str;$tmp['package'] = 'Sign=WXPay';$tmp["partnerid"] = $mch_id;$tmp['prepayid'] = $array['PREPAY_ID'];$tmp['timestamp'] = "$time";$data['appid'] = $appid;$data['noncestr'] = $nonce_str; //随机字符串// $data['package'] = 'prepay_id='.$array['PREPAY_ID']; //统一接口返回的 prepay_id 参数值，提交格式如：prepay_id=*$data['package'] = "Sign=WXPay";$data['partnerid']= $mch_id;$data['prepayid'] = $array['PREPAY_ID'];$data['timestamp'] = "$time"; //时间戳$data['sign'] = $this ->sign($tmp,$wxdata['key']);//签名} else {$data['status'] = 0;$data['text'] = "错误";$data['RETURN_CODE'] = $array['RETURN_CODE'];$data['RETURN_MSG'] = $array['RETURN_MSG'];}return json_encode($data);}public function sign($data,$wx_key){//签名 $data要先排好顺序$stringA = '';ksort($data);foreach($data as $key => $value) {if (!$value) continue;if ($stringA)$stringA.= '&'.$key."=".$value;else$stringA = $key."=".$value;}$stringSignTemp = $stringA.'&key='.$wx_key; //申请支付后有给予一个商户账号和密码，登陆后自己设置keyreturn strtoupper(md5($stringSignTemp));}//随机32位字符串private function nonce_str() {$result = '';$str = 'QWERTYUIOPASDFGHJKLZXVBNMqwertyuioplkjhgfdsamnbvcxz';for ($i = 0; $i < 32; $i++) {$result.= $str[rand(0, 48)];}return $result;}//curl请求啊public function http_request($url, $data = null, $headers = array()) {$curl = curl_init();if (count($headers) >= 1) {curl_setopt($curl, CURLOPT_HTTPHEADER, $headers);}curl_setopt($curl, CURLOPT_URL, $url);curl_setopt($curl, CURLOPT_SSL_VERIFYPEER, FALSE);curl_setopt($curl, CURLOPT_SSL_VERIFYHOST, FALSE);if (!empty($data)) {curl_setopt($curl, CURLOPT_POST, 1);curl_setopt($curl, CURLOPT_POSTFIELDS, $data);}curl_setopt($curl, CURLOPT_RETURNTRANSFER, 1);$output = curl_exec($curl);curl_close($curl);return $output;}//获取xmlprivate function xml($xml) {$p = xml_parser_create();xml_parse_into_struct($p, $xml, $vals, $index);xml_parser_free($p);$data = "";foreach($index as $key => $value) {if ($key == 'xml' || $key == 'XML') continue;$tag = $vals[$value[0]]['tag'];$value = $vals[$value[0]]['value'];$data[$tag] = $value;}return $data;}
}
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