<?php

//authentification
 $response = get_web_page("http://[IP_NAS_Synology]:5000/webapi/auth.cgi?api=SYNO.API.Auth&method=Login&version=2&account=xxx&passwd=xxx&session=SurveillanceStation&format=sid");
//echo $response; 
  $resArr = array();
   $resArr = ($response);

   $resArr = json_decode($response,true);

//sid in the array

$sid=array();
$sid=$resArr[data];
//echo $sid[sid];

//send Start record
$response = get_web_page("http://[IP_NAS_Synology]:5000/webapi/SurveillanceStation/extrecord.cgi?api=SYNO.SurveillanceStation.ExternalRecording&method=Record&version=1&cameraId=2&action=start&_sid=".$sid[sid]);
echo $response; 







function get_web_page($url) {
      $options = array (CURLOPT_RETURNTRANSFER => true, // return web page
    CURLOPT_HEADER => false, // don't return headers
    CURLOPT_FOLLOWLOCATION => true, // follow redirects
    CURLOPT_ENCODING => "", // handle compressed
    CURLOPT_USERAGENT => "test", // who am i
    CURLOPT_AUTOREFERER => true, // set referer on redirect
    CURLOPT_CONNECTTIMEOUT => 120, // timeout on connect
    CURLOPT_TIMEOUT => 120, // timeout on response
    CURLOPT_MAXREDIRS => 10 ); // stop after 10 redirects


      $ch = curl_init ( $url );
      curl_setopt_array ( $ch, $options );
      $content = curl_exec ( $ch );
      $err = curl_errno ( $ch );
      $errmsg = curl_error ( $ch );
      $header = curl_getinfo ( $ch );
      $httpCode = curl_getinfo ( $ch, CURLINFO_HTTP_CODE );

      curl_close ( $ch );

      $header ['errno'] = $err;
      $header ['errmsg'] = $errmsg;
      $header ['content'] = $content;
      return $header ['content'];
     }
?>