Question

I have an HTML form that contains the following code:

<input id="image_22" name="images[]" type="file"  />
<input id="image_8" name="images[]" type="file"  />   

I’d like to be able to store the form input ID element in a variable (e.g. $imgnumber = ‘image_22’). Is this possible? See my comment in the code below:

PHP:

for ($i = 0; $i < count($_FILES['images']['name']); $i++) {
        $number_of_file_fields++;
        if ($_FILES['images']['name'][$i] != '') { //check if file field empty or not
            $number_of_uploaded_files++;
            $uploaded_files[] = $_FILES['images']['name'][$i];

            if (move_uploaded_file($_FILES['images']['tmp_name'][$i], $upload_directory . $_FILES['images']['name'][$i])) {

                $number_of_moved_files++;
                // *** COMMENT *** // 
                $imgnumber = CURRENT_FILE_INPUT_ID - this would store e.g. "image_22"
                }

            }

    }

Many thanks for any help with this 🙂

Answer 1

Only the name and value of inputs are submitted to the server side. You could code the ID into the name instead of using an array of files.

<input id="image_22" name="image_22" type="file"  />
<input id="image_8" name="image_8" type="file"  />

Access on the PHP side:

foreach($_FILES as $imageName => $file)
{
    // $imageName contains image_22 or image_8
    // $file contains the full array for this particular file
}

Edit:

Your updated PHP code could be:

foreach($_FILES as $imageName => $file)
{
    $number_of_file_fields++;
    if ($file['name'] != '') { //check if file field empty or not
        $number_of_uploaded_files++;
        $uploaded_files[] = $file['name'];

        if (move_uploaded_file($file['tmp_name'], $upload_directory . $file['name'])) {

            $number_of_moved_files++;
            // *** COMMENT *** // 
            $imgnumber = $imageName; // image_22 or image_8
        }
    }
}

Failing that, you will have to send the ID as a separate variable, for example using a hidden input or the querystring.