This example demonstrates the following basic steps in creating line chart:

• Create a XYChart object using XYChart.XYChart.
  
  
• Specify the plot area of the chart using XYChart.setPlotArea. The plot area is the rectangle bounded by the x and y axes. You should leave some margin on the outside of the plot area for axis labels, chart titles, etc.
  
  
• Specify the labels on the x-axis using Axis.setLabels.
  
  
• Add a line layer and specify the data for the line using XYChart.addLineLayer.
  
  
• Generate the chart using BaseChart.makeChart2.

[File: phpdemo/simpleline.php".]

<?php require_once("../lib/phpchartdir.php"); #The data for the line chart $data = array(30, 28, 40, 55, 75, 68, 54, 60, 50, 62, 75, 65, 75, 91, 60, 55, 53, 35, 50, 66, 56, 48, 52, 65, 62); #The labels for the line chart $labels = array("0", "", "", "3", "", "", "6", "", "", "9", "", "", "12", "", "", "15", "", "", "18", "", "", "21", "", "", "24"); #Create a XYChart object of size 250 x 250 pixels $c = new XYChart(250, 250); #Set the plotarea at (30, 20) and of size 200 x 200 pixels $c->setPlotArea(30, 20, 200, 200); #Add a line chart layer using the given data $c->addLineLayer($data); #Set the x axis labels using the given labels $c->xAxis->setLabels($labels); #output the chart header("Content-type: image/png"); print($c->makeChart2(PNG)); ?>