foreach with single element

[nemini]

On a few hundred of lines I call a foreach quite a few times
(Checking img file)
It works fine in a multiple files environment
But if the user enters only one element then the foreach runs one too many time and adds an empty element
How could I go around that problem, do I have to set a switch and check for values in order to serve a foreach or a non-foreach snippet?

 

[nemini]

I found my error
The rest of the script is under the influence of
a quantity that I got from $aaa=$_FILES[‘image_file’]
which was reading all components of the file (5) although I was passing only one img
Not a good idea to do as I did!
Be sure (if testing for a quantity) to check for only a single value
For ex: $aaa=$_FILES[‘image_file’][‘file_name’]