0) {
return round($sum / $i, 1);
} else {
return null;
}
}
$db = new DBLib($database['host'], $database['user'], $database['password'], $database['database']);
$sensors = ["temp1" => "Innen", "temp2" => "Aussen"];
$show_days = true;
$series = array();
$days = [];
foreach ($sensors as $sensor => $name) {
$date = new DateTime("2015-04-01T00:00:00+02:00", new DateTimeZone("Europe/Berlin"));
$date2 = clone $date;
$day_summaries = array();
for ($i = 0; $i < $date->format("t"); $i++) {
$start = $date->format("U");
$date->add(new DateInterval("P1D"));
$end = $date->format("U");
$entries = $db->selectRange($sensor, "*", array("time", $start, $end));
$day_summaries[] = average($entries);
if ($show_days) {
$hours = [];
for ($j = 0; $j < 24; $j++) {
$start = $date2->format("U");
$date2->add(new DateInterval("PT1H"));
$end = $date2->format("U");
$entries = $db->selectRange($sensor, "*", array("time", $start, $end));
$hours[] = average($entries);
}
$days[] = ["name" => $date->format("d.m.Y") . " (" . $name . ")", "data" => $hours];
}
}
$series[] = array("name" => $name, "data" => $day_summaries);
}
$json = json_encode($series, JSON_NUMERIC_CHECK /*| JSON_PRETTY_PRINT*/);
$json2 = json_encode($days, JSON_NUMERIC_CHECK /*| JSON_PRETTY_PRINT*/);
$runtime = "Runtime: " . ((microtime(true) - $start) / 1000 / 1000);
$runtime .= " s";
?>
Highcharts Example