jpGraph不能包含PHP文件 [英] jpGraph can't include PHP file
问题描述
我正在尝试将一个PHP文件包含在另一个创建jpGraph图像的PHP文件中
I am trying to include one PHP file in another PHP file that creates a jpGraph image
(原因是我正在为图表加载mySQL数据，并且我想将登录凭据放入单独的文件中)
(The reason is that I am loading mySQL data for the chart, and I want to put the login credentials into a separate file)
我知道图表已创建(因为创建了正确的图像文件)，但是该图表未显示在网页中.
I know that the chart is created (because a correct image file is created) but the chart does not show up in the web page.
这是一个简化的代码示例:
Here is a simplified code example:
login.inc.php
login.inc.php
<?php
$lhostname="localhost";
$lusername="joeschmack";
$lpassword="autumnleaf";
$ldatabase="customers";
?>
accbarex1.html
accbarex1.html
<html>
<head>
<meta http-equiv="content-type" content="text/html; charset=ISO-8859-1">
<title></title>
</head>
<body>
<h3>This is where I want to display my graph</h3>
<img src="accbarex1.php">
</body>
</html>
accbarex1.php
accbarex1.php
<?php // content="text/plain; charset=utf-8"
require_once ('../../../lib/jpgraph/jpgraph.php');
require_once ('../../../lib/jpgraph/jpgraph_bar.php');
include("./login.inc.php");
$data1y=array(-8,8,9,3,5,6);
$data2y=array(18,2,1,7,5,4);
// Create the graph. These two calls are always required
$graph = new Graph(500,400);
$graph->SetScale("textlin");
$graph->SetShadow();
$graph->img->SetMargin(40,30,20,40);
// Create the bar plots
$b1plot = new BarPlot($data1y);
$b1plot->SetFillColor("orange");
$b1plot->value->Show();
$b2plot = new BarPlot($data2y);
$b2plot->SetFillColor("blue");
$b2plot->value->Show();
// Create the grouped bar plot
$gbplot = new AccBarPlot(array($b1plot,$b2plot));
// ...and add it to the graPH
$graph->Add($gbplot);
$graph->title->Set("Accumulated bar plots");
$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();
//save to file
$fileName = "/tmp/imagefile.png";
$graph->img->Stream($fileName);
?>
该文件显示正确的图表，但是网页accbarex1.html显示损坏的图像. 如果我将这一行注释掉
The file shows the correct chart, but the web page accbarex1.html shows a broken image. If I comment out the line
include("./login.inc.php");
然后两者都可以工作.
为什么?在这种情况下，如何包含文件?
Why? And how can I include a file in this situation?
修改 2013年5月13日:
Edit 5-13-2013:
鉴于包含行处于活动状态. 这有帮助(文件和嵌入式图表均可工作)
Given that the include line is active. This helps (both file and embedded chart work)
- ./login.inc.php不存在
- ./login.inc.php为空
这无济于事(仅文件有效，嵌入式图表不起作用)
This does not help (only file works, embedded chart does not work)
- 为包含文件使用绝对路径
- ./login.inc.php包含以下行 bla//PHP错误
- ./login.inc.php包含$ i = 1行；//没有PHP错误，没有PHP标签
- use absolute path for include file
- ./login.inc.php contains the line bla // PHP error
- ./login.inc.php contains the line $i=1; // no PHP error, no PHP tags
修改 2013年5月14日:
Edit 5-14-2013:
一些细微的进步:Firefox表现出相同的行为，但是至少我收到一条错误消息.错误控制台显示:
Some slight progress: Firefox shows the same behavior, but at least I get an error message. Error console says:
图片已损坏或被截断:http://.. acbarex1.php
Image corrupt or truncated: http:// .. acbarex1.php
推荐答案
我发现了问题所在.在结束>之后，我还有多余的字符，但是我看不到它们，因为它们是空格和换行符.这些字符弄乱了jpGraph图片.
I found what the problem was. I had extra characters after the closing ?>, but I could not see them because they were spaces and newline. These characters messed up the jpGraph image.
之前:
<?php
$lhostname="localhost";
$lusername="joeschmack";
$lpassword="autumnleaf";
$ldatabase="customers";
?><SPACE><SPACE><NEWLINE>
之后:
<?php
$lhostname="localhost";
$lusername="joeschmack";
$lpassword="autumnleaf";
$ldatabase="customers";
?>
解决了！当心多余的字符！
That fixed it! Beware the extra characters!
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