function request_post($url,$param = []){
$ch = curl_init();//初始化curl
curl_setopt($ch, CURLOPT_URL, $url);
curl_setopt($ch, CURLOPT_HEADER, 0);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
curl_setopt($ch, CURLOPT_POST, 1);//post提交方式
curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false); // 信任任何证书
curl_setopt($ch, CURLOPT_POSTFIELDS, http_build_query($param));
$data = curl_exec($ch);//运行curl
curl_close($ch);
return $data;
}