PHP code to implement WeChat and mini-program scanning payment

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nonce_str();//随机字符串 $notify_url ='回调地址'; $out_trade_no = $orderid;//商户订单号 $spbill_create_ip = '主机ip'; $total_fee = $fee*100;//因为充值金额最小是1 而且单位为分 如果是充值1元所以这里需要*100 $trade_type = 'NATIVE';//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['openid'] = $openid; $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);//签名 $post_xml = ' '.$appid.' '.$body.' '.$mch_id.' '.$nonce_str.' '.$notify_url.' '.$openid.' '.$out_trade_no.' '.$spbill_create_ip.' '.$total_fee.' '.$trade_type.' '.$sign.'  '; //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 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; $tmp['package'] = 'prepay_id='.$array['PREPAY_ID']; $tmp['signType'] = 'MD5'; $tmp['timeStamp'] = "$time"; $data['state'] = 1; $data['timeStamp'] ="$time";//时间戳 $data['nonceStr'] = $nonce_str;//随机字符串 $data['signType'] = 'MD5';//签名算法，暂支持 MD5 $data['package'] = 'prepay_id='.$array['PREPAY_ID'];//统一下单接口返回的 prepay_id 参数值，提交格式如：prepay_id=* $data['paySign'] = $this->sign($tmp);//签名,具体签名方案参见微信公众号支付帮助文档; $data['out_trade_no'] = $out_trade_no; $data['CODE_URL'] =$array['CODE_URL']; }else{ $data['state'] = 0; $data['text'] = "错误"; $data['RETURN_CODE'] = $array['RETURN_CODE']; $data['RETURN_MSG'] = $array['RETURN_MSG']; } return json_encode($data); } private function nonce_str(){//随即字符串 $result = ''; $str = 'QWERTYUIOPASDFGHJKLZXVBNMqwertyuioplkjhgfdsamnbvcxz'; for ($i=0;$i<32;$i++){ $result .= $str[rand(0,48)]; } return $result; } //生成订单号 private function order_number($openid){ // date('Ymd',time()).time().rand(10,99);//18位 return md5($openid.time().rand(10,99));//32位 } //签名 $data要先排好顺序 private function sign($data){ ksort($data); $stringA = ''; foreach ($data as $key=>$value){ if(!$value) continue; if($stringA) $stringA .= '&'.$key."=".$value; else $stringA = $key."=".$value; } $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key $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key return strtoupper(md5($stringSignTemp)); } //curl请求啊 function http_request($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 $output; } //获取xml public function xml($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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