/**
 * 模拟表单提交3 
 * @param $url 字符串/必填  
 * @param $data array/必填   
 * @return 字符串
 */
function postCurl($url,$data)
{
  $response='';
  
  $curl = curl_init();

  curl_setopt_array($curl, array(
    CURLOPT_URL => $url,
    CURLOPT_RETURNTRANSFER => true,
    CURLOPT_ENCODING => "",
    CURLOPT_MAXREDIRS => 10,
    CURLOPT_TIMEOUT => 0,
    CURLOPT_FOLLOWLOCATION => true,
  //   CURLOPT_SSL_VERIFYPEER => false,
  //   CURLOPT_SSL_VERIFYHOST => false,
    CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
    CURLOPT_CUSTOMREQUEST => "POST",
    CURLOPT_POSTFIELDS =>$data,
    CURLOPT_HTTPHEADER => array(
    "Content-Type: application/json"
    ),
  ));
  //echo 12211;
  // if(curl_exec($curl) === false)
  // {
  //  echo 'Curl error: ' . curl_error($curl);
  // }
  $response = curl_exec($curl);
    // echo $response;
  curl_close($curl);
  return $response;
}

  echo $response; 输不出内容，获取不了东西

输出错误

if(curl_exec($curl) === false)
 {
 echo 'Curl error: ' . curl_error($curl);
}

错误：curl error: SSL certificate problem: unable to get local issuer certificate

解决办法 ：加上这两个

    CURLOPT_SSL_VERIFYPEER => false,
    CURLOPT_SSL_VERIFYHOST => false,