Check if specific input file is empty

Question

In my form I have 3 input fields for file upload:

<input type=file name="cover_image"> <input type=file name="image1"> <input type=file name="image2"> 

How can I check if cover_image is empty - no file is put for upload?

Answer 1

You can check by using the size field on the $_FILES array like so:

if ($_FILES['cover_image']['size'] == 0 && $_FILES['cover_image']['error'] == 0) {     // cover_image is empty (and not an error) } 

(I also check error here because it may be 0 if something went wrong. I wouldn't use name for this check since that can be overridden)

Answer 2

Method 1

if($_FILES['cover_image']['name'] == "") { // No file was selected for upload, your (re)action goes here } 

Method 2

if($_FILES['cover_image']['size'] == 0) { // No file was selected for upload, your (re)action goes here }