php文件上传未定义的偏移通知[重复]

I have a bit of cod the works fine on MAMP but gives me an error on WAMP. The code is:

$uploads = ""; 
for($x=0; $x<$count_data; $x++)
{
    $uploads .= $_FILES['file']['name'][$x] . ' ';
}

And the error is:

Notice: Undefined offset: 1

Notice: Undefined offset: 2

Notice: Undefined offset: 3

Notice: Undefined offset: 4

Any ideas?

Here is the file up load code:

$number_of_file_fields = 0;
$number_of_uploaded_files = 0;
$number_of_moved_files = 0;
$uploaded_files = array();
$upload_directory = dirname(__file__) . '/../uploads/'; //set upload directory
$count_data=count($_FILES['file']) ;
$uploads = ""; 
for($x=0; $x<$count_data; $x++)
{
    $uploads .= $_FILES['file']['name'][$x] . ' ';
}



for ($i = 0; $i < count($_FILES['file']['name']); $i++) {
    $number_of_file_fields++;
    if ($_FILES['file']['name'][$i] != '') { //check if file field empty or not
        $number_of_uploaded_files++;
        $uploaded_files[] = $_FILES['file']['name'][$i];
        if (move_uploaded_file($_FILES['file']['tmp_name'][$i], $upload_directory . $orderNumber . "_" . $_FILES['file']['name'][$i])) {
            $number_of_moved_files++;
        }
    }
}

</div>

There's 2 ways for multiple file uploads to be organized in the $_FILES array, depending on whether they have the same name attribute or not.

To handle both cases, try something like this:

$uploads = '';
foreach ($_FILES as $inputName => $fileInfo) {
    foreach ((array) $fileInfo['name'] as $n) {
        $uploads .= $n . ' ';
    }
}

To help debug the different between the two hosts, try echo'ing out the contents of the $_FILES array on each and see how it's different.

print_r($_FILES);