PHP开发APP端微信支付功能

$newPara['appid'],"noncestr"=>$newPara['nonce_str'],"package"=>"Sign=WXPay","prepayid"=>$get_data['prepay_id'],"partnerid"=>$newPara['mch_id'],"timestamp"=>$newPara['timeStamp'],); $json['datas'] = $secondSignArray; $json['ordersn'] = $newPara["out_trade_no"]; $json['datas']['sign'] = weChatSecondSign($newPara,$get_data['prepay_id']); $json['message'] = "预支付完成"; //预支付完成,在下方进行自己内部的业务逻辑 /*****************************/ return json_encode($json); } else{ $json['message'] = $get_data['return_msg']; } } return json_encode($json); }

//第一次签名的函数produceWeChatSign
function produceWeChatSign($newPara){
$stringA = self::getSignContent($newPara);
$stringSignTemp=$stringA."&key=192006250b4c09247ec02edce69f6a2d";
return strtoupper(MD5($stringSignTemp));
}

//生成xml格式的函数
public static function getWeChatXML($newPara){
$xmlData = "";
foreach ($newPara as $key => $value) {
$xmlData = $xmlData."<".$key.">".$value."</".$key.">";
}
$xmlData = $xmlData."";
return $xmlData;
}

//通过curl发送数据给微信接口的函数
function sendPrePayCurl($xmlData) {
$url = "https://api.mch.weixin.qq.com/pay/unifiedorder";
$header[] = "Content-type: text/xml";
$curl = curl_init();
curl_setopt($curl,CURLOPT_HTTPHEADER,$header);
curl_setopt($curl,CURLOPT_URL,$url);
curl_setopt($curl,CURLOPT_RETURNTRANSFER,true);
curl_setopt($curl,CURLOPT_POST,1);
curl_setopt($curl,CURLOPT_POSTFIELDS,$xmlData);
$data = curl_exec($curl);
if (curl_errno($curl)) {
print curl_error($curl);
}
curl_close($curl);
return self::XMLDataParse($data);

}

//xml格式数据解析函数
public static function XMLDataParse($data){
$msg = array();
$msg = (array)simplexml_load_string($data,'SimpleXMLElement',LIBXML_NOCDATA);
return $msg;
}

//二次签名的函数
function weChatSecondSign($newPara,$prepay_id){
$secondSignArray = array(
"appid"=>$newPara['appid'],"prepayid"=>$prepay_id,);
$stringA = self::getSignContent($secondSignArray);
$stringSignTemp=$stringA."&key=192006250b4c09247ec02edce69f6a2d";
return strtoupper(MD5($stringSignTemp));
}