Linux 使用 PHP 将 Powerpoint PPT 转换为 JPG 或 PNG 图片
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Powerpoint PPT to JPG or PNG Image conversion using PHP
提问by Rob Ganly
I need to convert single Powerpoint (PPT) slides/files to JPG or PNG format on linux but haven't found any way of doing so successfully so far. I have heard that it can be done with open office via php but haven't found any examples or much useful documentation. I'd consider doing it with python or java also, but I'm unsure which route to take.
我需要在 linux 上将单个 Powerpoint (PPT) 幻灯片/文件转换为 JPG 或 PNG 格式，但到目前为止还没有找到任何成功的方法。我听说它可以通过 php 使用 open office 来完成，但还没有找到任何示例或很多有用的文档。我也会考虑用 python 或 java 来做，但我不确定要走哪条路。
I understand that it can be done using COM on a Windows server but would really like to refrain from doing so if possible.
我知道它可以在 Windows 服务器上使用 COM 来完成，但如果可能的话，我真的想避免这样做。
Any ideas/pointers gratefully received. (And yes, I have searched the site and others before posting!)
感谢收到任何想法/指示。（是的，我在发布之前搜索了该网站和其他网站！）
Thanks in advance,
提前致谢，
Rob Ganly
罗布·甘利
回答by Filipi Vianna
Quick answer (2 steps):
快速回答（2步）：
## First converts your presentation to PDF
unoconv -f pdf presentation.ppt
## Then convert your PDF to jpg
convert presentation.pdf presentation_%03d.jpg
And voilá.
瞧。
Explaning a little more:
稍微解释一下：
I had already follow in the same need. Convert a powerpoint set of slides into a set of images. I haven't found one tool to exactly this. But I have found unoconv which converts libreoffice formats to other formats, including jpg, png and PDF. The only drawback is that unoconv only converts one slide to a jpg/png file, but when converting to PDF it converts the whole presentation to a multiple page PDF file. So the answare were convert the PPT to PDF and with imagemagick's convert, convert the multiple page PDF to a set of images.
我已经有同样的需求。将一组幻灯片转换为一组图像。我还没有找到一种工具来解决这个问题。但是我发现 unoconv 可以将 libreoffice 格式转换为其他格式，包括 jpg、png 和 PDF。唯一的缺点是 unoconv 只将一张幻灯片转换为 jpg/png 文件，但在转换为 PDF 时，它将整个演示文稿转换为多页 PDF 文件。所以answare将PPT转换为PDF，并使用imagemagick的转换，将多页PDF转换为一组图像。
Unoconv is distributed within Ubuntu distribution
Unoconv 在 Ubuntu 发行版中分发
apt-get install unoconv
And convert is distributed with the imagemagick package
并且 convert 与 imagemagick 包一起分发
apt-get install imagemagick
回答by Juan Elias
This can be done from PHP using a 3d party library (Aspose.Slides). It will work on both .ppt and .pptx, and it's lightning fast.
这可以通过 PHP 使用 3d 方库 (Aspose.Slides) 来完成。它适用于 .ppt 和 .pptx，而且速度快如闪电。
Here is the relevant piece of code in PHP:
这是 PHP 中的相关代码段：
$runtime->RegisterAssemblyFromFile("libraries/_bin/aspose/Aspose.Slides.dll", "Aspose.Slides");
$runtime->RegisterAssemblyFromFullQualifiedName("System.Drawing, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a", "System.Drawing");
$sourcefile = "D:\MYPRESENTATION.ppt";
$presentation = $runtime->TypeFromName("Aspose.Slides.Presentation")->Instantiate($sourcefile);
$format = $runtime->TypeFromName("System.Drawing.Imaging.ImageFormat")->Png;
$x = 0;
/** @var \NetPhp\Core\NetProxyCollection */
$slides = $presentation->Slides->AsIterator();
foreach ($slides as $slide) {
$bitmap = $slide->GetThumbnail(1, 1);
$destinationfile ="d:\output\slide_{$x++}.png";
$bitmap->Save($destinationfile, $format);
}
$presentation->Dispose();
It does not use Office Interop (which is NOT recommended for server side automation) and is lightining fast.
它不使用 Office Interop（不推荐用于服务器端自动化）并且速度很快。
You can control the output format, size and quality of the images. Indeed you get a .Net Bitmap object so you can do with it whatever you want.
您可以控制图像的输出格式、大小和质量。实际上，您获得了一个 .Net Bitmap 对象，因此您可以随心所欲地使用它。
The original post is here:
原帖在这里：
http://www.drupalonwindows.com/en/blog/powerpoint-presentation-images-php-drupal-example
http://www.drupalonwindows.com/en/blog/powerpoint-presentation-images-php-drupal-example
