A little more research on the PHP side. The inclusion of “charset” in the returned string was introduced in PHP 5.3+ to make it RFC2045 compliant. I don’t know what version of PHP our host was running prior to the recent upgrade, but it does seem unlikely to have been as old as 5.2. Although, I suppose it’s possible.
Can anyone confirm that the MIME type comparison code in Easy File Uploader 2.7.8 is written to expect the inclusion of the charset information?