class.upload.php is a powerful and mature PHP class to manage uploaded files, and manipulate images in many ways. The script is available under a GPL license.
I am afraid you need to ask the maitainers of K2. You can also check your system for MIME detection methods that are available. It looks like your setup considers the files as dangerous, and therefore adds a .txt the the files.Reply
k2 is the end of the file when I upload the file extension. txt writes.
Example: Add a section of the file add test.doc file. The file system seems to be test.doc.txt.
. How can I remove txt extension.
Note: xls, doc, docx, xlsx, and so on. the end of the office files. txt files, such as sets, but does not change jpg pdf png.