Question

如何用php的gd库画一个简单的坐标系

简单的x轴，Y轴，随便分几段就行

Answer 1

<?php
include ("src/jpgraph.php");
include ("src/jpgraph_line.php");
//将要用于图表创建的数据存放在数组中
$data = array(19,23,34,38,45,67,71,78,85,87,90,96);
$graph = new Graph(400,300); //创建新的Graph对象
$graph->SetScale("textlin"); //设置刻度样式
$graph->img->SetMargin(30,30,80,30); //设置图表边界
$graph->title->Set("Year to Date Cost"); //设置图表标题
// Create the linear plot
$lineplot=new LinePlot($data); // 创建新的LinePlot对象
$lineplot->SetLegend("Amount(M dollars)"); //设置图例文字
$lineplot->SetColor("red"); // 设置曲线的颜色
// Add the plot to the graph
$graph->Add($lineplot); //在统计图上绘制曲线
// Display the graph
$graph->Stroke(); //输出图像
?>