I have an issue with GD not creating a new JPG file, it just fails. No error messages and no indication as to what is happening. This is not new code, it has been in and working for the past six years, but all of a sudden with larger images it has started failing.

As a background this is running on an old server (to be switched off and moved to a new site on PHP8 in a couple of months time) that has PHP5.3.3 with GD version 2.0.34.

The code is creating thumbnails from the high-res image (around 24-30MB) and outputting a series of thumbnails from 150px wide to 1024px wide. It fails on all. I have increased the PHP memory limit on the page to 512MB, and set the GD.JPEG_ignore_warning flag for corrupt JPGs.

But every time with these files, this line:

$src_img = @imagecreatefromjpeg($file_path);

just returns FALSE. But never falls over with an error. The file is definitely there (run the same code with a file of the same name that is <20MB and it works fine) and there is plenty of disc space/memory available for a 60MB file to be processed in memory, so I dont see that that is the issue.

A search of Google, StackOverflow and several other sites has not produced any similar issues.

Can anyone offer any thoughts as to what the issue/solution is? I have been looking at this for two days now, and we need to resolve it - simply using smaller JPG files isn't an option for this.