小程序支付 PHP

小程序支付完整demo 拿去直接可以用 须准备好小程序appid 和商户mch_id 回调地址你们随意,想用的话就用不想用填个业务域名就行了

/****小程序支付/

public function wxpay()
{// $param = input('param.');// if(!$param['user_id']){// 	return json_encode(array('error_code'=>10001,'msg'=>'请求失败'));// }$config = C('wxxcx');$data['appid'] = $config['appid'];$data['body'] = '商品支付';$data['mch_id'] = $config['mch_id'];$data['nonce_str'] = $this->createNoncestr();$data['notify_url'] = 'www.donglongshangcheng.com';$data['out_trade_no'] = rand(100000,999999);$data['openid'] = 'o-0S-4ldkCKhdwqcspBejBwd8-Uo';$data['spbill_create_ip'] = $_SERVER['SERVER_ADDR'];$data['total_fee'] = 1;$data['trade_type'] = 'JSAPI';$data['sign'] = $this->getSign($data);$xml = $this->arrayToXml($data);$url = 'https://api.mch.weixin.qq.com/pay/unifiedorder';$response = $this->postXmlCurl($xml,$url);$response = $this->xmlToArray($response);if($response['return_code'] == 'FAIL' || $response['result_code'] == 'FAIL'){return json_encode(array('error_code'=>10001,'msg'=>'支付失败'));}//调起支付数据签名字段$timeStamp = time();$nonce_pay = $this->createNoncestr();$package = $response['prepay_id'];$signType = "MD5";$stringPay = "appId=".$config['appid']."&nonceStr=".$nonce_pay."&package=prepay_id=".$package."&signType=".$signType."&timeStamp=".$timeStamp."&key=".$config['mch_secrect'];$paySign = strtoupper(md5($stringPay));$rpay['timeStamp'] = (string)$timeStamp;$rpay['nonceStr'] = $nonce_pay;$rpay['package'] = "prepay_id=".$package;$rpay['signType'] = $signType;$rpay['paySign'] = $paySign;return json_encode(array('error_code'=>10000,'msg'=>'请求成功','data'=>$rpay));
}/** 生成随机字符串方法*/
protected function createNoncestr($length = 32 ){$chars = "abcdefghijklmnopqrstuvwxyz0123456789";$str ="";for ( $i = 0; $i < $length; $i++ ) {$str.= substr($chars, mt_rand(0, strlen($chars)-1), 1);}return $str;
}/**排序并格式化参数方法，签名时需要使用*/
protected function formatBizQueryParaMap($paraMap, $urlencode)
{$buff = "";ksort($paraMap);foreach ($paraMap as $k => $v){if($urlencode){$v = urlencode($v);}//$buff .= strtolower($k) . "=" . $v . "&";$buff .= $k . "=" . $v . "&";}$reqPar = "";if (strlen($buff) > 0){$reqPar = substr($buff, 0, strlen($buff)-1);}return $reqPar;
}/*
* 对要发送到微信统一下单接口的数据进行签名
*/
protected function getSign($Obj){foreach ($Obj as $k => $v){$param[$k] = $v;}//签名步骤一：按字典序排序参数ksort($param);$String = $this->formatBizQueryParaMap($param, false);//签名步骤二：在string后加入KEY$String = $String."&key=".C('wxxcx.mch_secrect');//签名步骤三：MD5加密$String = md5($String);//签名步骤四：所有字符转为大写$result_ = strtoupper($String);return $result_;
}//发送xml请求方法
private static function postXmlCurl($xml, $url, $second = 30)
{$ch = curl_init();//设置超时curl_setopt($ch, CURLOPT_TIMEOUT, $second);curl_setopt($ch, CURLOPT_URL, $url);curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, FALSE);curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, FALSE); //严格校验//设置headercurl_setopt($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, $xml);curl_setopt($ch, CURLOPT_CONNECTTIMEOUT, 20);curl_setopt($ch, CURLOPT_TIMEOUT, 40);set_time_limit(0);//运行curl$data = curl_exec($ch);//返回结果if ($data) {curl_close($ch);return $data;} else {$error = curl_errno($ch);curl_close($ch);throw new WxPayException("curl出错，错误码:$error");}
}//数组转字符串方法
protected function arrayToXml($arr){$xml = "";foreach ($arr as $key=>$val){if (is_numeric($val)){$xml.="<".$key.">".$val."";}else{$xml.="<".$key.">";}}$xml.="";return $xml;}//将xml字符串转换为数组protected static function xmlToArray($xml){$array_data = json_decode(json_encode(simplexml_load_string($xml, 'SimpleXMLElement', LIBXML_NOCDATA)), true);return $array_data;}

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