Zend FR

class GraphsController extends Zend_Controller_Action
{
    function displayAction()
    {
        $params = $this->_request->getParams();
        
        switch($params['name'])
        {
            
            case 1 :
                /* Répartition présence absence */

                include_once ("jpgraph.php");
                include_once ("jpgraph_pie.php");

                $total_presence = $_SESSION['total_presence'];
                $total_absence = $_SESSION['total_absence'];

                // Some data
                $data = array($total_presence, $total_absence);

                // Create the Pie Graph.
                $graph = new PieGraph(700,350);
                $graph->SetShadow();

                // Set A title for the plot
                $graph->title->Set("REPARTITION ABSENCE/PRESENCE");
                $graph->title->SetFont(FF_FONT1,FS_BOLD);

                // Create
                $p1 = new PiePlot($data);
                $p1->SetCenter(0.4,0.5);

                $p1->SetLegends(array("Présence","Absence"));
                $targ=array("pie_csimex1.php#1","pie_csimex1.php#2","pie_csimex1.php#3",
"pie_csimex1.php#4","pie_csimex1.php#5","pie_csimex1.php#6");
                $alts=array("val=%d","val=%d","val=%d","val=%d","val=%d","val=%d");
                $p1->SetCSIMTargets($targ,$alts);
                $p1->value->SetFont(FF_LIBERATION_SANS,FS_NORMAL,9);

                $graph->Add($p1);


                // Send back the HTML page which will call this script again
                // to retrieve the image.
                $graph->Stroke();
                break;
}

<img src="<?php print ROOT_URL . '/graphs/display/name/1/refresh/' . time() ?>">