survey/classes/class.SurveyChart.php

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<?php
require_once ("phplot/phplot.php");

class SurveyChart
{
        //IlliasCharts constructor
        /*
        * $GraphTyp = "bars" or "lines"
        */

        var $graph;
        var $graphData;
        function SurveyChart($GraphTyp,$XSize,$YSize,$Titel,$XLabel,$YLabel,$DataArray)
        {
                $this->graphData = array();
                $this->graph = new PHPlot($XSize,$YSize);
                switch ($GraphTyp)
                {
                        case "pie":
                                $this->graph->SetDataType("text-data-single");
                                break;
                        default:
                                $this->graph->SetDataType("text-data");
                                break;
                }
                $this->graph->SetPlotType($GraphTyp);
                $this->graph->SetTitle($Titel);
                $this->graph->SetXTitle($XLabel);
                $this->graph->SetYTitle($YLabel);
                $this->graph->SetXDataLabelPos("plotdown");
                $this->makeDataForOneQuestion($DataArray, $GraphTyp);
                $this->graph->SetDataValues($this->graphData);
                $this->draw();
        }

        function makeDataForOneQuestion($Data, $GraphTyp)
        {
                foreach ($Data as $value)
                {
                        if (array_key_exists("title", $value))
                        {
                                switch ($GraphTyp)
                                {
                                        case "pie":
                                                array_push($this->graphData, array($value["title"], $value["selected"], ""));
                                                break;
                                        default:
                                                array_push($this->graphData, array($value["title"], $value["selected"]));
                                                break;
                                }
                        }
                        else
                        {
                                array_push($this->graphData, array($value["value"], $value["selected"]));
                        }
                }
        }

        function draw()
        {
                $this->graph->DrawGraph();
                $this->graph->PrintImage();
        }
}

?>