
<?php
$ydata1 = array();
$ydata2 = array();
$ydata3 = array();
$sensordata='';
if (($handle = fopen("temperaturgraph.txt", "r")) !== FALSE) {
    while (($data = fgetcsv($handle, 2000, ";")) !== FALSE) {
        $num = count($data);
    if ($num < 1)
        continue;

        $ydata1[] = floatval($data[0]);
       // $ydata2[] = floatval($data[1]);
        $ydata3[] = "\"$data[1]\"";

 // Datenstring
//$sensordata=$sensordata.'[\''.$data_zeit." / ".$data_datum.'\','.$data_sensor1.','.$data_sensor2.'],';

//$sensordata=$sensordata.'[\''.$data[2].'\','.$data[0].', '.$data[1].'],';
$sensordata=$sensordata.'[\''.$data[1].'\','.$data[0].'],';
            }

    fclose($handle);
//echo $sensordata;
}

?>

<html>
  <head>
    <script type="text/javascript" src="https://www.gstatic.com/charts/loader.js"></script>
    <script type="text/javascript">
      google.charts.load('current', {'packages':['corechart']});
      google.charts.setOnLoadCallback(drawChart);

      function drawChart() {
        var data = google.visualization.arrayToDataTable([
          ['Datum/Zeit', ' temp1 '],
          <?php echo $sensordata ?>
        ]);

        var options = {
          title: 'Temperatursensor DS1820',
          curveType: 'function',
          legend: { position: 'bottom' }
        };

        var chart = new google.visualization.LineChart(document.getElementById('curve_chart'));

        chart.draw(data, options);
      }
    </script>
  </head>
  <body>
  	<h1>
	<center>* * * Raum Temperatur * * *
	</h1>
    <div id="curve_chart" style="width: 1200px; height: 500px"></div>
  
  </body>
</html>


