$chart = new Highchart();
$chart->includeExtraScripts();

$chart->chart->type = "arearange";
$chart->chart->zoomType = "x";
$chart->title->text = "Temperature variation by day";
$chart->xAxis->type = "datetime";
$chart->yAxis->title->text = null;
$chart->tooltip = array(
    'crosshairs' => true,
    'shared' => true,
    'valueSuffix' => 'ºC'
);
$chart->legend->enabled = false;
$chart->series[] = array(
    'name' => 'Temperatures',
    'data' => new HighchartJsExpr('data')
);