Quote:$this->upload->data()

This is a helper function that returns an array containing all of the data related to the file you uploaded. Here is the array prototype:

Array
(
[file_name] => mypic.jpg
[file_type] => image/jpeg
[file_path] => /path/to/your/upload/
[full_path] => /path/to/your/upload/jpg.jpg
[raw_name] => mypic
[orig_name] => mypic.jpg
[file_ext] => .jpg
[file_size] => 22.2
[is_image] => 1
[image_width] => 800
[image_height] => 600
[image_type] => jpeg
[image_size_str] => width="800" height="200"
)
Explanation

Here is an explanation of the above array items.

Item Description
file_name The name of the file that was uploaded including the file extension.
file_type The file's Mime type
file_path The absolute server path to the file
full_path The absolute server path including the file name
raw_name The file name without the extension
orig_name The original file name. This is only useful if you use the encrypted name option.
file_ext The file extension with period
file_size The file size in kilobytes
is_image Whether the file is an image or not. 1 = image. 0 = not.
image_width Image width.
image_heigth Image height
image_type Image type. Typically the file extension without the period.
image_size_str A string containing the width and height. Useful to put into an image tag.