Multiple files can be uploaded using different name for
input.
It is also possible to upload multiple files
simultaneously and have the information organized
automatically in arrays for you. To do so, you need to use
the same array submission syntax in the HTML form as you do
with multiple selects and checkboxes:
注: Support for multiple file uploads was added in version 3.0.10.
When the above form is submitted, the arrays $_FILES['userfile'],
$_FILES['userfile']['name'], and
$_FILES['userfile']['size'] will be initialized (as well
as in $HTTP_POST_FILES for PHP version prior 4.1.0). When register_globals is on, globals for
uploaded files are also initialized. Each of these will be a
numerically indexed array of the appropriate values for the
submitted files.
For instance, assume that the filenames /home/test/review.html and /home/test/xwp.out are submitted. In this
case, $_FILES['userfile']['name'][0]
would contain the value
review.html, and
$_FILES['userfile']['name'][1] would contain the value
xwp.out. Similarly, $_FILES['userfile']['size'][0] would contain
review.html's filesize, and so
forth.
$_FILES['userfile']['name'][0],
$_FILES['userfile']['tmp_name'][0],
$_FILES['userfile']['size'][0], and
$_FILES['userfile']['type'][0] are
also set.