我正在尝试学习pChart2和php，因此我的编码可能有点粗糙。我在主index.php页面上显示测试图时遇到问题。当我将所有代码放在单独的文件中并查看该文件时，该示例工作正常。当我把它添加回我的主要php网页时，我得到了一堆乱码。 这是我的PHP代码。
<!DOCTYPE html>
<?php
session_start();
include "/var/www/pchart/class/pDraw.class.php";
include "../pchart/class/pImage.class.php";
include "../pchart/class/pData.class.php";
?>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title></title>
</head>
<body>
<table border="1">
<tr><th>Source Country</th><th>Destination Country</th><th>Destination IP</th></tr>
<td>
<?php
#header("Content-Type: image/png");
$db_host = "localhost";
$db_name = "silk";
$db_login = "";
$db_pass = "";
$con = mysql_connect($db_host, $db_login, $db_pass, $db_name);
$sql = mysql_query("SELECT srcCC,COUNT(*) AS Hits FROM silk.pipeline GROUP BY srcCC ORDER BY COUNT(*) DESC LIMIT 10");
$scountryinfo = array();
echo "srcCC        Hits<br />";
while ($row_country = mysql_fetch_assoc($sql)) {
$scountryinfo[] = $row_country;
}
foreach ($scountryinfo as $countryinfo){
echo $countryinfo['srcCC'];
echo "            ";
echo $countryinfo['Hits'];
echo "<br />";
//echo "Hits: ".$usrinfo['COUNT']."<br />";
}
echo "</td>";
echo "<td>";
$dstcc = mysql_query("SELECT dstCC,COUNT(*) AS Hits FROM silk.pipeline GROUP BY dstCC ORDER BY COUNT(*) DESC LIMIT 10");
$dcountryinfo = array();
echo "dstCC        Hits<br />";
while ($row_dcountry = mysql_fetch_assoc($dstcc)) {
$dcountryinfo[] = $row_dcountry;
}
foreach ($dcountryinfo as $countryinfo) {
echo "    ";
echo $countryinfo['dstCC'];
echo "            ";
echo $countryinfo['Hits'];
echo "<br />";
}
echo "</td>";
echo "<td>";
$dcountryIP = mysql_query("SELECT dIP,COUNT(*) AS Hits FROM silk.pipeline GROUP BY dIP ORDER BY COUNT(*) DESC LIMIT 10");
$dcountryipinfo = array();
echo "    dIP                     Hits<br />";
while ($row_dip = mysql_fetch_assoc($dcountryIP)) {
$dcountryipinfo[] = $row_dip;
}
foreach ($dcountryipinfo as $dip) {
echo "    ";
echo $dip['dIP'];
echo "            ";
echo $dip['Hits'];
echo "<br />";
}
echo "</td></tr>";
echo "<tr><th>Source IP</th><th>Destination Port</th></tr><tr><td>";
$scountryIP = mysql_query("SELECT sIP,COUNT(*) AS Hits FROM silk.pipeline GROUP BY sIP ORDER BY COUNT(*) DESC LIMIT 10");
$scountryipinfo = array();
echo "    sIP                     Hits<br />";
while ($row_sip = mysql_fetch_assoc($scountryIP)) {
$scountryipinfo[] = $row_sip;
}
foreach ($scountryipinfo as $sip) {
echo "    ";
echo $sip['sIP'];
echo "            ";
echo $sip['Hits'];
echo "<br />";
}
echo "</td>";
echo "<td>";
$dport = mysql_query("SELECT dPort,COUNT(*) AS Hits FROM silk.pipeline GROUP BY dPort ORDER BY COUNT(*) DESC LIMIT 10");
$dportinfo = array();
echo "    Port                     Hits<br />";
while ($row_dport = mysql_fetch_assoc($dport)) {
$dportinfo[] = $row_dport;
}
foreach ($dportinfo as $dp) {
echo "      ";
echo $dp['dPort'];
echo "            ";
echo $dp['Hits'];
echo "<br />";
}
echo "<td>";
$MyData = new pData();
$MyData->addPoints(array(60,30,10),"Answers");
$MyData->setAxisName(0,"Answers (%)");
$MyData->addPoints(array("I do agree ","I disagree ","No opinion "),"Options");
$MyData->setAbscissa("Options");
/* Create the pChart object */
$myPicture = new pImage(500,220,$MyData);
/* Write the chart title */
$myPicture->setFontProperties(array("FontName"=>"../pchart/fonts/Forgotte.ttf","FontSize"=>15));
$myPicture->drawText(20,34,"Q: Flexibility is a key point of this library",array("FontSize"=>20));
/* Define the default font */
$myPicture->setFontProperties(array("FontName"=>"../pchart/fonts/pf_arma_five.ttf","FontSize"=>6));
/* Set the graph area */
$myPicture->setGraphArea(70,60,480,200);
$myPicture->drawGradientArea(70,60,480,200,DIRECTION_HORIZONTAL,array("StartR"=>200,"StartG"=>200,"StartB"=>200,"EndR"=>240,"EndG"=>240,"EndB"=>240,"Alpha"=>30));
/* Draw the chart scale */
$scaleSettings = array("DrawXLines"=>FALSE,"Mode"=>SCALE_MODE_START0,"GridR"=>0,"GridG"=>0,"GridB"=>0,"GridAlpha"=>10,"Pos"=>SCALE_POS_TOPBOTTOM);
$myPicture->drawScale($scaleSettings);
/* Turn on shadow computing */
$myPicture->setShadow(TRUE,array("X"=>1,"Y"=>1,"R"=>0,"G"=>0,"B"=>0,"Alpha"=>10));
/* Draw the chart */
$myPicture->drawBarChart(array("Rounded"=>TRUE,"Surrounding"=>30));
/* Render the picture (choose the best way) */
$myPicture->autoOutput("pictures/example.drawBarChart.poll.png");
echo "</td>";
?>
</td>
</tr></table>
</body>
</html>
答案 0 :(得分：1)
pChart可以将其输出呈现为文件，也可以呈现为Content-Type image/png的二进制数据流。
因此，将pChart与网页合并的最简单方法是将图表/绘图函数放在单独的PHP文件中，然后在HTML中调用单独的脚本通过图片代码<img src="yourPChartFile.php">显示从脚本生成的图片，因为单独脚本返回了您的浏览器可以呈现的image/png。
如果您坚持在与HTML页面相同的PHP文件中创建图表，则必须将pChart脚本结果保存到Web服务器可以访问的位置的图像文件（通过$myPicture->render("FILE_NAME_HERE.png")），然后链接到<img>代码中生成的文件。
所有这些都在pChart documentation
中描述答案 1 :(得分：1)
在您的脚本中创建图表，就像pChart库所说的那样。
此代码按照您希望的那样创建pChart
include("../libraries/pChart/class/pDraw.class.php");
include("../libraries/pChart/class/pImage.class.php");
/* Create the pChart object */
$myPicture = new pImage(700,230);
/* Draw the background */
$Settings = array("R"=>170, "G"=>183, "B"=>87, "Dash"=>1, "DashR"=>190, "DashG"=>203, "DashB"=>107);
$myPicture->drawFilledRectangle(0,0,700,230,$Settings);
/* Overlay with a gradient */
$Settings = array("StartR"=>219, "StartG"=>231, "StartB"=>139, "EndR"=>1, "EndG"=>138, "EndB"=>68, "Alpha"=>50);
$myPicture->drawGradientArea(0,0,700,230,DIRECTION_VERTICAL,$Settings);
$myPicture->drawGradientArea(0,0,700,20,DIRECTION_VERTICAL,array("StartR"=>0,"StartG"=>0,"StartB"=>0,"EndR"=>50,"EndG"=>50,"EndB"=>50,"Alpha"=>80));
/* Draw the picture border */
$myPicture->drawRectangle(0,0,699,229,array("R"=>0,"G"=>0,"B"=>0));
/* Write the picture title */
$myPicture->setFontProperties(array("FontName"=>"../fonts/Silkscreen.ttf","FontSize"=>6));
$myPicture->drawText(10,13,"drawLine() - Basis",array("R"=>255,"G"=>255,"B"=>255));
/* Turn on shadow computing */
$myPicture->setShadow(TRUE,array("X"=>1,"Y"=>1,"R"=>0,"G"=>0,"B"=>0,"Alpha"=>20));
/* Draw some lines */
for($i=1;$i<=100;$i=$i+4)
$myPicture->drawLine($i+5,215,$i*7+5,30,array("R"=>rand(0,255),"G"=>rand(0,255),"B"=>rand(0,255),"Ticks"=>rand(0,4)));
/* Draw an horizontal dashed line with extra weight */
$myPicture->drawLine(370,160,650,160,array("R"=>0,"G"=>0,"B"=>0,"Ticks"=>4,"Weight"=>3));
/* Another example of extra weight */
$myPicture->drawLine(370,180,650,200,array("R"=>255,"G"=>255,"B"=>255,"Ticks"=>15,"Weight"=>1));
然后只需使用此代码输出pChart
/* Render the picture (choose the best way) */
ob_start();
imagepng($myPicture->Picture);
$contents = ob_get_contents();
ob_end_clean();
print "<img src='data:image/png;base64,".base64_encode($contents)."' />\n";