Simple example of php histogram generation jpgraph class library example

/**
* Use JpGraph to generate histogram
* by bbs.it-home.org
*/
　require_once '../jpgraph/src/jpgraph.php';
 '../jpgraph/src/jpgraph_bar.php';
　 // y-axis data, assigned in array form
　 $ydata = array(12,4,9,15,11,10,9,7,15,7) ;
　 // Create a Graph class, 350 is the width, 250 is the length, auto: means that the generated cache file name is the file name + extension of the file (.jpg .png .gif...)
　$graph = new Graph(350,250 ,"auto");
　　 // Set the scale type. The x-axis scale can be used as a straight-line scale for text labeling, and the y-axis is a straight-line scale
　 $graph->SetScale("textlin");
　 // Create a coordinate class and use y-axis data injection
　 $lineplot=new LinePlot($ydata);
　 // The y-axis connection line is set to blue
　 $lineplot->SetColor("blue");
　 // The coordinate class is injected into the icon class
　 $ graph->Add($lineplot);
　 // Display graph
　 $graph->Stroke();
?>