PHP4 用のライブラリを PHP5 でテストしています。

　　[[サンプルによるテスト]]
@DIV
<?php
set_include_path( "/user/php/jpgraph-1.21b/src" );

include ("jpgraph.php");
include ("jpgraph_bar.php");

$datay=array(12,8,19,3,10,5);

// Create the graph. These two calls are always required
$graph = new Graph(300,200,"auto");	
$graph->SetScale("textlin");

// Add a drop shadow
$graph->SetShadow();

// Adjust the margin a bit to make more room for titles
$graph->img->SetMargin(40,30,20,40);

// Create a bar pot
$bplot = new BarPlot($datay);
$graph->Add($bplot);

// Setup the titles
$graph->title->Set("A simple bar graph");
$graph->xaxis->title->Set("X-title");
$graph->yaxis->title->Set("Y-title");

$graph->title->SetFont(FF_FONT1,FS_BOLD);
$graph->yaxis->title->SetFont(FF_FONT1,FS_BOLD);
$graph->xaxis->title->SetFont(FF_FONT1,FS_BOLD);

// Display the graph
$graph->Stroke();
?>
@END

1) include_path に、ライブラリのパスを設定する
2) include の記述を変更
@DIV
set_include_path( "/user/php/jpgraph-1.21b/src" );

include ("jpgraph.php");
include ("jpgraph_bar.php");
@END