I got the same question than How do I restore the images from a MediaWiki backup?, but without command line access !
Practically, I got a 1.18.? MW install totally crashed, outputting PHP errors. I can display pages and for instance make XML exports, and I got a full backup of both database and httpdocs folder.
... but no access to the server command line, so the scripts described in the quotes answer won't work for me !
I installed a brand-new 1.28.0 MW and successfully imported content and meta pages. Now what about the images ? I uploaded the original images folder and made sure the hash option was on, but to no avail...