Searched for ability to search through image attachment real filenames and could not find anything.
So I added my own custom pages to such a thing.
The code is no where perfect, but i am just glad it works.
You can try it here: https://www.gimplearn.net/isearch.php
You can view searches that had been performed on my forum here: https://www.gimplearn.net/isearches.php
If you'd like to implement something similar on your phpbb forum: https://www.gimplearn.net/viewtopic.php ... 648#p10648
My members like to have descriptive words for their filenames (the files that they upload) so it's a nice feature to have I think.
I think it's a great feature for forums that get a lot of image attachments.