I came through this very funny case while i was developing a site which uses DOMPDF to generate PDF from html.
The problem was I was not getting the images in the PDF generated.
- I had url_fopen ON on server.
- I had tried all relative and absolute paths for the image.
- Everything I could imagine.
Finally I found out that a simple CSS was not letting the image get displayed on PDF
the css was for img tag
I removed the CSS and the images were there. :((
A day wasted by a single line of CSS.