我正在使用 jpgraph 为我的网站绘制一些统计图表,并且我想在不刷新页面的情况下执行此操作。所以我把 jpgraph 代码放在一个单独的文件中,命名为 plot_graphs.php 并通过 AJAX 向它发送请求。现在,如果我直接打开文件 plot_graphs.php,它会很好地打开图形。但是当我从 AJAX 打开它并指向它以在<div>
页面上显示响应时,我得到的是:
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等等等等
有没有办法在不重新加载页面并将 plot_graphs.php 代码直接放入 div 的情况下使其工作?页面的字符集是 utf-8 以防万一。这些是 plot_graphs.php 的内容:
<?php
require_once ('../jpgraph/src/jpgraph.php');
require_once ('../jpgraph/src/jpgraph_line.php');
$type=$_GET['type'];
$unit=$_GET['unit'];
$term=$_GET['term'];
$datay1 = array(20,15,23,15);
$datay2 = array(12,9,42,8);
$datay3 = array(5,17,32,24);
// Setup the graph
$graph = new Graph(300,250);
$graph->SetScale("textlin");
$theme_class=new UniversalTheme;
$graph->SetTheme($theme_class);
$graph->img->SetAntiAliasing(false);
$graph->title->Set('Filled Y-grid');
$graph->SetBox(false);
$graph->img->SetAntiAliasing();
$graph->yaxis->HideZeroLabel();
$graph->yaxis->HideLine(false);
$graph->yaxis->HideTicks(false,false);
$graph->xgrid->Show();
$graph->xgrid->SetLineStyle("solid");
$graph->xaxis->SetTickLabels(array('A','B','C','D'));
$graph->xgrid->SetColor('#E3E3E3');
/* $graph->SetBackgroundImage("tiger_bkg.png",BGIMG_FILLPLOT); */
// Create the first line
$p1 = new LinePlot($datay1);
$graph->Add($p1);
$p1->SetColor("#6495ED");
$p1->SetLegend('Line 1');
// Create the second line
$p2 = new LinePlot($datay2);
$graph->Add($p2);
$p2->SetColor("#B22222");
$p2->SetLegend('Line 2');
// Create the third line
$p3 = new LinePlot($datay3);
$graph->Add($p3);
$p3->SetColor("#FF1493");
$p3->SetLegend('Line 3');
$graph->legend->SetFrameWeight(1);
// Output line
$graph->Stroke();
?>