php中如何实现微信企业向用户付款的代码实例

$v) {
  $str.=$k.'='.$v.'&';
}
$str.='key='.$secrect_key;
$data['sign']=md5($str);
$xml=arraytoxml($data);
// echo $xml;
$url='https://api.mch.weixin.qq.com/mmpaymkttransfers/promotion/transfers';
$res=curl($xml,$url);
$return=xmltoarray($res);
print_r($return);
// echo getcwd().'/cert/apiclient_cert.pem';die;
function unicode() {
  $str = uniqid(mt_rand(),1);
  $str=sha1($str);
  return md5($str);
}
function arraytoxml($data){
  $str='';
  foreach($data as $k=>$v) {
    $str.='<'.$k.'>'.$v.'';
  }
  $str.='';
  return $str;
}
function xmltoarray($xml) {
   //禁止引用外部xml实体
  libxml_disable_entity_loader(true);
  $xmlstring = simplexml_load_string($xml, 'SimpleXMLElement', LIBXML_NOCDATA);
  $val = json_decode(json_encode($xmlstring),true);
  return $val;
}
function curl($param="",$url) {
  $postUrl = $url;
  $curlPost = $param;
  $ch = curl_init();                   //初始化curl
  curl_setopt($ch, CURLOPT_URL,$postUrl);         //抓取指定网页
  curl_setopt($ch, CURLOPT_HEADER, 0);          //设置header
  curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);      //要求结果为字符串且输出到屏幕上
  curl_setopt($ch, CURLOPT_POST, 1);           //post提交方式
  curl_setopt($ch, CURLOPT_POSTFIELDS, $curlPost);      // 增加 HTTP Header（头）里的字段
  curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, FALSE);    // 终止从服务端进行验证
  curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, FALSE);
  curl_setopt($ch,CURLOPT_SSLCERT,getcwd().'/cert/apiclient_cert.pem'); //这个是证书的位置
  curl_setopt($ch,CURLOPT_SSLKEY,getcwd().'/cert/apiclient_key.pem'); //这个也是证书的位置
  $data = curl_exec($ch);                 //运行curl
  curl_close($ch);
  return $data;
}