如何从$ _FILES嵌套数组中获取文件名

Question

I'm attempting to list all the filenames of images uploaded via a form to then be sent via email.

fileupload.html:

<form method="post" action="upload.php" enctype="multipart/form-data" id="upload" >
<input type="file" name="filesupl[]" multiple id="files" />
<input type="submit" name="UploadBtn" value="Upload" class="formtext" id="UploadBtn">
</form>

upload.php:

$art_file = $_FILES['filesupl'];
$filecounter = 1;
$count = 0;
foreach ( $art_file as $i => $art_inner ){ 
                    echo $filecounter . ") " . $art_file[$i]['name'] . "<br />"; $filecounter++; 
        }
if ($_SERVER['REQUEST_METHOD'] == 'POST' and isset($_FILES['filesupl']))
    {
        $extension = pathinfo($_FILES['filesupl']['name'], PATHINFO_EXTENSION);

        // Upload files
        // loop all files
        foreach ( $_FILES['filesupl']['name'] as $i => $name )
        {
            // if file not uploaded then skip it
            if ( !is_uploaded_file($_FILES['filesupl']['tmp_name'][$i]) )
                continue;

            // skip large files
            if ( $_FILES['filesupl']['size'][$i] >= $max_size )
                continue;

            // skip unprotected files
            if( !in_array(pathinfo($name, PATHINFO_EXTENSION), $extensions) )
                continue;

            // now we can move uploaded files
            if( move_uploaded_file($_FILES["filesupl"]["tmp_name"][$i], $dir . $name) )
                $count++;
        }

    }

echo json_encode(array('count' => $count));

I've attempted numerous ways to access the 'name' of the files uploaded (the code above was one of those attempts), to no avail.

Answer 1

I'm attempting to list all the filenames of images uploaded ...

If your sole purpose is to get all the file names of the uploaded files, then your code should simply be like this:

foreach($_FILES['filesupl']['name'] as $name){
    // echo $name . '<br />';
}

Now if you want to refactor your code, and to make it work - use a for loop like this:

$count = count($_FILES['filesupl']['name']);
for($i = 0; $i < $count; ++$i){
    // if file not uploaded then skip it
    if ( !is_uploaded_file($_FILES['filesupl']['tmp_name'][$i]) )
        continue;

    // skip large files
    if ( $_FILES['filesupl']['size'][$i] >= $max_size )
        continue;

    // get file extension
    $extension = pathinfo($_FILES['filesupl']['name'][$i], PATHINFO_EXTENSION);

    // skip unprotected files
    if( !in_array($extension, $extensions) )
        continue;

    // now we can move uploaded files
    if( move_uploaded_file($_FILES["filesupl"]["tmp_name"][$i], $dir . $_FILES['filesupl']['name'][$i])){
        // file has been uploaded
    }
}

echo json_encode(array('count' => $count));