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PHP接口微信支付

PHP后台调用微信支付下单
function wx_getPayRequest($openid, $orderid, $rmb, $title,$appoids)
{
$nonce = $orderid.mt_rand(10000,99999);
$orderid=$orderid.'_'.$nonce;//str_replace(",","_",$appoids);
//Log::write('n ================'.$orderid,'notice');
$srct='0x'.md5(config('app.environment')['paykey'].$orderid);
$notify = '';//回调地址,自己写,支付成功回调,在回调页面进行更改与用户金钱相关的代码
$url= 'https://api.mch.weixin.qq.com/pay/unifiedorder';//统一接口prepay_id
// post data
$now = time().'';//时间
$appid ='';//小程序ID 写到一个类里面了 方便后期修改 当然也可以在这里直接写
$mchid ='';//商户号
// Log::write('n $mchid================'.json_encode($mchid),'notice');
// Log::write('n $appid================'.json_encode($appid),'notice');
$data = array(
'appid' => $appid,
'mch_id' => $mchid,
'spbill_create_ip' => '127.0.0.1',//终端ip Y
'nonce_str' => $nonce, //随机字符串Y
'openid' => $openid, //用户标识 N
'body' => $title, //商品描述 Y
// 'detail' => $body, //商品详情 N
'attach' => $appoids, //附加数据 N
'out_trade_no' => $orderid, //商户订单号 Y
'total_fee' => $rmb, //总金额 单位分 int Y
'notify_url' => $notify, //通知地址 Y
'trade_type' => 'JSAPI',
);

$data[ 'sign' ] = self::MakeSign($data);
//echo $data[ 'sign' ];
// Log::write('n sign================'.json_encode($data[ 'sign' ]),'notice');

$xml=self::wx_toXML($data);
$ret = $this->http_request($url,$xml);
$json = self::wx_parseXML( $ret );
//Log::write('n ================'.json_encode($json),'notice');
if( !$json || !isset($json[ 'prepay_id' ]) )
{
return array( 'payCode'=>1,'ret' => 'fail', 'tip' => $json[ 'return_msg' ] );
}

$prepayid = $json[ 'prepay_id' ];
$req = array(
'appId' => $appid,
'timeStamp' => $now,
'nonceStr' => $nonce,
'package' => 'prepay_id='.$prepayid,
'signType' => 'MD5',
);
$req[ 'paySign' ] = self::wx_getPkgSign($req);
//$req[ 'notify' ] = $notify;
return $req;
}

///作用:格式化参数,签名过程需要使用
private 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;
}


public function wx_getPkgSign($req )
{
foreach ($req 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);
//签名步骤二:在string后加入KEY
$String = $String . "&key=" . config('app.environment')['paykey'];
//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_;
}

public function wx_toXML( $data )
{
$xml = '<xml>';
foreach( $data as $key => $val )
{
$xml .= '<' . $key . '><![CDATA[' . $val . ']]></' . $key . '>';
}
$xml .= '</xml>';
return $xml;
}

/**
* 输出xml字符
* @param $data
* @return string
*/
public function ToXml($data)
{
if(!is_array($data)
|| count($data) <= 0)
{
throw new WxPayException("数组数据异常!");
}

$xml = "<xml>";
foreach ($data as $key=>$val)
{
if (is_numeric($val)){
$xml.="<".$key.">".$val."</".$key.">";
}else{
$xml.="<".$key."><![CDATA[".$val."]]></".$key.">";
}
}
$xml.="</xml>";
return $xml;
}

/**
* 格式化参数格式化成url参数
*/
public function ToUrlParams($data)
{
$buff = "";
foreach ($data as $k => $v)
{
if($k != "sign" && $v != "" && !is_array($v)){
$buff .= $k . "=" . $v . "&";
}
}

$buff = trim($buff, "&");
return $buff;
}

/**
* 生成签名
* @param $data
* @return string 签名,本函数不覆盖sign成员变量,如要设置签名需要调用SetSign方法赋值
*/
public function MakeSign($data)
{
//签名步骤一:按字典序排序参数
ksort($data);
$string = $this->ToUrlParams($data);
//签名步骤二:在string后加入KEY
$string = $string . "&key=".config('app.environment')['paykey'];
//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;
}

public function wx_parseXML( $str )
{
$rsp = array();
$xml = @simplexml_load_string( $str );
if( $xml && $xml->children() )
{
foreach( $xml->children() as $node )
{
if( $node->children() )
{
$k = $node->getName();
$nodeXml = $node->asXML();
$v = substr( $nodeXml, strlen($k)+2, strlen($nodeXml)-2*strlen($k)-5 );
}
else
{
$k = $node->getName();
$v = (string)$node;
}
$rsp[ $k ] = $v;
}
}
return $rsp;
}

public function payRefund($wxtranid,$order_childid, $ordertotalrmb,$refundrmb){
$appid = config('environment')[config('current_environment')]['appid'];//小程序ID 写到一个类里面了 方便后期修改 当然也可以在这里直接写
$mchid = config('environment')[config('current_environment')]['mchid'];//商户号
$nonce = $order_childid.mt_rand(10000,99999);

Log::write('取消预约单申请退款中===$ordertotalrmb='.$ordertotalrmb.'=======$refundrmb='.$refundrmb,'notice');

//统一下单退款参数构造
$unifiedorder = array(
'appid' => $appid,
'mch_id' => $mchid,
'nonce_str' => $nonce,
'transaction_id' => $wxtranid,
'out_refund_no' => $order_childid,
'total_fee' => intval($ordertotalrmb),
'refund_fee' => intval($refundrmb),
'notify_url'=>'https://wxcon.drmpsy.com.cn/api/appo/payBackSuccess'
);
$unifiedorder['sign'] = self::wx_getPkgSign($unifiedorder);
Log::write('$content111111================'.json_encode($unifiedorder),'notice');
//请求数据
$xmldata = self::wx_toXml($unifiedorder);
$opUrl = "https://api.mch.weixin.qq.com/secapi/pay/refund";
//$res = $this->http_request($opUrl, $xmldata);
$res = $this->postXmlSSLCurl($xmldata,$opUrl);
Log::write($res,'notice');
if (!$res) {
return "Can't connect the server";
}
$content = self::xmlToArray($res);
Log::write('$content================'.json_encode($content),'notice');
try{
if (strval($content['result_code']) == 'FAIL') {
return strval($content['err_code_des']);
}
}
catch (Exception $err){

}
try{
if ($content['return_code']&&strval($content['return_code']) == 'FAIL') {
return strval($content['return_msg']);
}
}
catch (Exception $err){

}
return $content;
}

public function xmlToArray($xml){
$array_data = json_decode(json_encode(simplexml_load_string($xml, 'SimpleXMLElement', LIBXML_NOCDATA)), true);
return $array_data;
}

//需要使用证书的请求
private function postXmlSSLCurl($xml,$url,$second=30)
{
$ch = curl_init();
//超时时间
curl_setopt($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($ch,CURLOPT_RETURNTRANSFER,TRUE);
//设置证书
//使用证书:cert 与 key 分别属于两个.pem文件
//默认格式为PEM,可以注释
curl_setopt($ch,CURLOPT_SSLCERTTYPE,'PEM');
curl_setopt($ch,CURLOPT_SSLCERT, '/nfs/website/wx.drmpsy.com.cn/api/cert/apiclient_cert.pem');
//默认格式为PEM,可以注释
curl_setopt($ch,CURLOPT_SSLKEYTYPE,'PEM');
curl_setopt($ch,CURLOPT_SSLKEY,'/nfs/website/wx.drmpsy.com.cn/api/cert/apiclient_key.pem');
//post提交方式
curl_setopt($ch,CURLOPT_POST, true);
curl_setopt($ch,CURLOPT_POSTFIELDS,$xml);
$data = curl_exec($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;
}
}
//curl请求
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;
}
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