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Uploading multiple files
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:
Support for multiple file uploads was added in PHP 3.0.10.
Example 5.4. Uploading multiple files
<form action="file-upload.php" method="post" enctype="multipart/form-data">
Send these files:<br />
<input name="userfile[]" type="file" /><br />
<input name="userfile[]" type="file" /><br />
<input type="submit" value="Send files" />
</form>
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 versions prior
to 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 file size, and so forth.
$_FILES['userfile']['name'][0],
$_FILES['userfile']['tmp_name'][0],
$_FILES['userfile']['size'][0], and
$_FILES['userfile']['type'][0] are
also set.