app微信支付服务器端php demo
class Wxpay { /*配置参数
*/
private $config = array(
'appid' => "wxc888888888", /*微信开放平台上的应用id*/
'mch_id' => "88888888", /*微信申请成功之后邮件中的商户id*/
'api_key' => "5d82747060a5873e0d3de256b8485094", /*在微信商户平台上自己设定的api密钥 32位*/
'notify_url' => 'http://www.xxxxx.com/app/index.php/Api/modifyPayState' /*自定义的回调程序地址*/
);
//下单
public function getPrePayOrder($body, $out_trade_no, $total_fee){
$url = "https://api.mch.weixin.qq.com/pay/unifiedorder";
$notify_url = $this->config["notify_url"];
$onoce_str = $this->createNoncestr();
$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";
$sign = $this->getSign($data);
$data["sign"] = $sign;
$xml = $this->arrayToXml($data);
$response = $this->postXmlCurl($xml, $url);
//将微信返回的结果xml转成数组
$response = $this->xmlToArray($response);
//返回数据
return $respone;
}
/*生成签名*/
public function getSign($Obj){
foreach ($Obj as $k => $v){
$Parameters[$k] = $v;
}
//签名步骤一：按字典序排序参数
ksort($Parameters);
$String = $this->formatBizQueryParaMap($Parameters, false);
//echo '【string1】'.$String.'</br>';
//签名步骤二：在string后加入KEY
$String = $String."&key=".$this->config['api_key'];
//echo "【string2】".$String."</br>";
//签名步骤三：MD5加密
$String = md5($String);
//echo "【string3】 ".$String."</br>";
//签名步骤四：所有字符转为大写
$result_ = strtoupper($String);
//echo "【result】 ".$result_."</br>";
return $result_;
}
/**
*作用：产生随机字符串，不长于32位
*/
public function createNoncestr( $length = 32 ){
$chars = "abcdefghijklmnopqrstuvwxyz0123456789";
$str ="";
for ( $i = 0; $i < $length; $i++ ){
$str.= substr($chars, mt_rand(0, strlen($chars)-1), 1);
}
return $str;
}
//数组转xml
public function arrayToXml($arr){
$xml = "<xml>";
foreach ($arr as $key=>$val){
if (is_numeric($val)){
$xml.="<".$key.">".$val."</".$key.">";
}else{
$xml.="<".$key."><!]></".$key.">";
}
}
$xml.="</xml>";
return $xml;
}
/**
*作用：将xml转为array
*/
public function xmlToArray($xml){
//将XML转为array
$array_data = json_decode(json_encode(simplexml_load_string($xml, 'SimpleXMLElement', LIBXML_NOCDATA)), true);
return $array_data;
}
/**
*作用：以post方式提交xml到对应的接口url
*/
public function postXmlCurl($xml,$url,$second=30){
//初始化curl
$ch = curl_init();
//设置超时
curl_setopt($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($ch,CURLOPT_SSL_VERIFYHOST,FALSE);
//设置header
curl_setopt($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:$error"."<br>";
curl_close($ch);
return false;
}
}
/*
获取当前服务器的IP
*/
public 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 $cip;
}
/**
*作用：格式化参数，签名过程需要使用
*/
public function formatBizQueryParaMap($paraMap, $urlencode){
$buff = "";
ksort($paraMap);
foreach ($paraMap as $k => $v){
if($urlencode){
$v = urlencode($v);
}
$buff .= $k . "=" . $v . "&";
}
$reqPar;
if (strlen($buff) > 0){
$reqPar = substr($buff, 0, strlen($buff)-1);
}
return $reqPar;
}
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