虽然 node 很棒,但我觉得这种方法不必要地复杂,因为有许多可能会损坏的移动部件。所以我做了一个超级简单的动态创建文件的解决方案。我面临的唯一问题是将临时文件添加到 pdf 后删除它。它会破坏 PDF 的渲染。并将目录设置为 /tmp,使 phantomjs 崩溃。我目前想到的最好的想法是将临时生成的文件放在一个临时目录中,然后每晚使用 cronjob 删除该目录中的所有内容。
我出于代码简单性而发布此内容。它应该在一个函数中,以保持代码的可重用性。
<?php
$TmpInFileName = 'tmp/graph_'.md5($CurrentDate.rand(666,9482845713)).'.js';
$TmpGraphFileName = 'tmp/pnggraph_'.md5($CurrentDate.rand(2666,54713)).'.png';
$Data = "
{
chart: {
zoomType: 'xy',
width: 700,
height: 520
},
credits: {
enabled: false
},
colors: [
'#2f7ed8',
'#910000',
'#8bbc21',
'#1aadce',
'#492970',
'#f28f43',
'#77a1e5',
'#c42525',
'#a6c96a'
],
title: {
text: 'Sample Graph - created at ".date('m/d/Y g:i:s a')."',
style: {
fontSize: '16px',
}
},
xAxis: [{
categories: ['00:00', '00:15', '00:30', '00:45', '01:00', '01:15', '01:30']
}],
yAxis: [{
labels: {
format: '{value}',
style: {
fontSize: '14px',
color: Highcharts.getOptions().colors[1]
}
},
title: {
text: 'Y axis',
style: {
fontSize: '16px',
color: Highcharts.getOptions().colors[1]
}
}
}, { // Secondary yAxis
title: {
text: 'Sec Yaxis',
style: {
fontSize: '16px',
color: Highcharts.getOptions().colors[0]
}
},
labels: {
format: '{value}',
style: {
fontSize: '14px',
color: Highcharts.getOptions().colors[0]
}
},
opposite: true
}],
tooltip: {
shared: true
},
legend: {
layout: 'horizontal',
backgroundColor: (Highcharts.theme && Highcharts.theme.legendBackgroundColor) || '#FFFFFF'
},
series: [{
name: 'first',
type: 'spline',
yAxis: 1,
data: [0, -119.9502311075212, -119.96203992145706, -119.98172620218355, -119.71898290168028, -119.97023935590325, -119.95230287195413]
},
{
name: 'second',
type: 'spline',
yAxis: 1,
data: [0, -119.24222667756482, -119.60905809195222, -119.63522965403729, -119.11011466187935, -119.63643171374981, -119.54969080301575]
},{
name: 'third',
type: 'column',
data: [10, 11, 9, 7, 5, 2, 7]
},{
name: 'fourth',
type: 'column',
data: [0, -0.7080044299563895, -0.35298182950484147, -0.34649654814626274, -0.6088682398009269, -0.33380764215343106, -0.40261206893838164]
}]
}";
try {
$myfile = fopen($TmpInFileName, "w") or die("Unable to open file!");
fwrite($myfile, $Data);
fclose($myfile);
} catch (Exception $e) {
echo 'Error: '.$e.' <br />';
}
$URL_Command = "phantomjs /highcharts/exporting-server/phantomjs/highcharts-convert.js -infile $TmpInFileName -outfile $TmpGraphFileName -width 600";
exec($URL_Command);
echo '<img src="'.$TmpGraphFileName.'" alt="Could not load img: '.$TmpGraphFileName.'">';
?>
我希望这有帮助。我找不到一个不涉及 Node.JS 或 Java 的好解决方案。我想要一个纯 PHP 解决方案。