$chart = new Highchart(Highchart::HIGHSTOCK);

$chart->chart->renderTo = "container";
$chart->rangeSelector->selected = 1;
$chart->title->text = "USD to EUR exchange rate";
$chart->yAxis->title->text = "Exchange rate";

$chart->series[] = array(
    'name' => "USD to EUR",
    'data' => new HighchartJsExpr("data"),
    'id' => "dataseries",
    'tooltip' => array(
        'valueDecimals' => 4
    )
);

$chart->series[] = array(
    'type' => "flags",
    'name' => "Flags on series",
    'data' => array(
        array(
            'x' => new HighchartJsExpr("Date.UTC(2011, 1, 14)"),
            'title' => "On series"
        ),
        array(
            'x' => new HighchartJsExpr("Date.UTC(2011, 3, 28)"),
            'title' => "On series"
        )
    ),
    'onSeries' => "dataseries",
    'shape' => "squarepin"
);

$chart->series[] = array(
    'type' => "flags",
    'name' => "Flags on axis",
    'data' => array(
        array(
            'x' => new HighchartJsExpr("Date.UTC(2011, 2, 1)"),
            'title' => "On axis"
        ),
        array(
            'x' => new HighchartJsExpr("Date.UTC(2011, 3, 1)"),
            'title' => "On axis"
        )
    ),
    'shape' => "squarepin"
);