Checking for the existance of uploaded file.

[xenlab]

I have a file upload script that I am working on, and have run into thi problem before. I want to make some file uploads optional. is there a way to tell if the

input type="file"

HTML element was submitted blank?

i've tried $_FILES['file']['name'] and that doesn't seem to work (file is the name of my html element btw)

How do i make it optional without using some other control, like, say a checkbox that the user has to check off if he wants to upload the file. I think this is how i got around it before.

I looked at is_uploaded_file but this didn't seem like it would fit.

Any ideas?

[planetsim]

try this

if ($_FILES['file']['error'] != 0) {
  //no file or error
} else {
  //hey im uploading here
}

Okay basically 0 means the file is uploaded and no errors.

Here is a list from PHP Manual About errors

UPLOAD_ERR_INI_SIZE

Value: 1; The uploaded file exceeds the upload_max_filesize directive in php.ini. 

UPLOAD_ERR_FORM_SIZE

Value: 2; The uploaded file exceeds the MAX_FILE_SIZE directive that was specified in the html form. 

UPLOAD_ERR_PARTIAL

Value: 3; The uploaded file was only partially uploaded. 

UPLOAD_ERR_NO_FILE

Value: 4; No file was uploaded.

[Shrike]

Always remember that the PHP manual knows more than you 😉

http://uk.php.net/manual/en/function.is-uploaded-file.php