Please, go through the following Description and the hint and get the Answer easily!
Actually as many ones have advised to add/replace the following line in the file (application/config/mimes.php):
But I have realized that in CodeIgniter Version 2.2.* the issue is little bit different!
They have added that line already, but forgot to add the following "file_type" ==> 'application/vnd.ms-excel'
So adding the above 'application/vnd.ms-excel' into the array of xlsx file type, let me upload the .xlsx files!
Whenever you get the following error, on CodeIgniter Platform, and uploading files:
The filetype you are attempting to upload is not allowed.
Do the following in your Controller's upload method,
And it will give you a huge array which you can get an idea from this link.(Please, see the end of that page). In that array you can get what's the real mime_type of the file you are trying to upload but not giving you to upload.
In my case, my file extension was, .xlsx , and the mime type was application/vnd.ms-excel , which was not added into the
'xlsx' => array('application/vnd.openxmlformats-officedocument.spreadsheetml.sheet', 'application/zip'),
So I added it manually, and after that it works VERRY WELL!!!
Same thing happened to uploading CSV once again, when I checked the file extension is .csv but the mime type was text/plain, when I added it to the following line:
and saved as follows,
'csv' => array('text/x-comma-separated-values', 'text/comma-separated-values', 'application/octet-stream', 'application/vnd.ms-excel', 'application/x-csv', 'text/x-csv', 'text/csv', 'application/csv', 'application/excel', 'application/vnd.msexcel', 'text/plain'),
It works like a charm! :D
Try it, if you find something new within the above steps, please comment here!!!
So, hoping this will be helpful to all of the CodeIgniter community, I posted it taking some time!
this is the best solution.Don't know why it hasn't got many upvotes.Thanks man