[RESOLVED] dynamically accessing a value the $_FILES superglobal

coffejor

Hello All,

I have a multi-uploader javascript that dynamically creates file upload fields much in the same way that GMail does. Each file field is named incrementally based on a counter, with the resulting name being "file_countervalue".

My problem arises in the script that handles the form, in that I can't figure out how to dynamically define the name in the $_FILES superglobal. I.E. my simple test script reads as follows:

$counter = 1;
if (isset($_POST['Submit'])) {
    while ($counter < 100) {
        $filename = 'file_'.$counter;
        if (is_uploaded_file ($_FILES[$filename])) {
            echo 'yes '.$counter.' --- ';
        }
        $counter++;
    }
}

But this fails to return anything. (**NOTE: I chose to employ a counter and cycle through 100 results because my multi-uploader also allows the user to remove file-upload fields, so there is no guarantee that the fields will be contiguously numbered)

You can see my multi-uploader in action here.

Thanks for any and all advice!

~Jordan

dagon

run print_r($_FILES);
and post the results so we have a better idea of what you have to work with.

coffejor

Hey Dagon,

First of all, thanks for the interest in my problem. As per requested, I submitted three random PDF's via my form and used print_r to return the results, they are as follows:

Array
(
    [file_1] => Array
        (
            [name] => Bulk Postage Statement Form.pdf
            [type] => application/pdf
            [tmp_name] => /tmp/phpSiFSnu
            [error] => 0
            [size] => 19908
        )

[file_2] => Array
    (
        [name] => README.pdf
        [type] => application/pdf
        [tmp_name] => /tmp/phpsVzmQv
        [error] => 0
        [size] => 54292
    )

[file_3] => Array
    (
        [name] => Saab Install.pdf
        [type] => application/pdf
        [tmp_name] => /tmp/phpmiB23w
        [error] => 0
        [size] => 212798
    )

)

I hope this gives you some insight into my situation. Thanks again for the interest!

~Jordan

dagon

if (isset($_POST['Submit'])) {
        foreach($_FILES as $file){
//do what you like with each $file array
echo $file[name];
}

}

coffejor

Wow, how did I miss that solution?? Sometimes you get so focused on doing it one way that you fail to see the simple solution... I think the phrase is "Miss the forest for the trees" 🙂

Thanks for you help!! I needed a clear mind to solve that one. Dagon, I owe you one!

~Jordan