带有谷歌图表api的Html2pdf：无法加载图片

Question

I have a online reporting tool that uses html2pdf to generate pdf and google chart api to generate graphs used in that pdf. Since today morning there is an error:

ERROR n°6
File : /public_html/beta/html2pdf/html2pdf.class.php
Line : 1319

Impossible to load the image https://chart.googleapis.com/chart?cht=pc&chs=150x90&chd=t:0|10,10,10,10,10,10&chco=FFFFFF,00ff3c|00ff3c|00ff3c|00ff3c|00ff3c|00ff3c&chl=|0|0|0|0|0|0

I have tried to open the link seperately to check for errors, however that works like a charm. I have tried using the chof=validate from google troubleshooting site, this shows that my chart script doesn't have a problem. I haven't changed anything on my site that could cause any disruptions.

I have run out of debugging solutions and am looking forward to your replies! Hope you can help me :)

Regards,

Babu

Answer 1

The problem is in the image request... HTML2PDF has a bug loading remote PNG images (maybe any PNG I suspect), request the image as JPG or GIF

In your case the chart API support GIF's

https://chart.googleapis.com/chart?cht=pc&chs=150x90&chd=t:0|10,10,10,10,10,10&chco=FFFFFF,00ff3c|00ff3c|00ff3c|00ff3c|00ff3c|00ff3c&chl=|0|0|0|0|0|0&chof=gif

Regards