html/currentjson.php

   1 <?php
   2 $RRDFILE="/home/nirgal/ampy/power.rrd";
   3
   4 $info=rrd_lastupdate($RRDFILE);
   5 if ($info === FALSE)
   6         $result=[
   7                 'last_update' => 'unknown',
   8                 'watts' => 'unknown'
   9         ];
  10 else
  11         $result=[
  12                 'last_update' => $info['last_update'],
  13                 'watts' => $info['data'][0]
  14         ];
  15 header("Content-Type: text/json");
  16 echo(json_encode($result));
  17 ?>