多次上传并调整class.upload.php的大小

I'm trying to upload multiple image to the server and to make different resolution version of each image. To do this I'm using class.upload.php for the first time. http://www.verot.net/php_class_upload.htm

I look at the documentation and starting from the demo example http://www.verot.net/php_class_upload_download_zip.htm

I made a form with multiple input

<form name="form3" enctype="multipart/form-data" method="post" action="upload.php">
   <p><input type="file" size="32" name="my_field[]" value="" /></p>
   <p><input type="file" size="32" name="my_field[]" value="" /></p>
   <p><input type="file" size="32" name="my_field[]" value="" /></p>
   <p><input type="file" size="32" name="my_field[]" value="" /></p>
   <p><input type="file" size="32" name="my_field[]" value="" /></p>
   <p class="button"><input type="hidden" name="action" value="multiple" />
   <input type="submit" name="Submit" value="upload" /></p>
</form>

the original php from the example only upload the image without resizing them:

$files = array();
foreach ($_FILES['my_field'] as $k => $l) {
    foreach ($l as $i => $v) {
        if (!array_key_exists($i, $files))
            $files[$i] = array();
        $files[$i][$k] = $v;
    }
}

// now we can loop through $files, and feed each element to the class
foreach ($files as $file) {

    // we instanciate the class for each element of $file
    $handle = new Upload($file);

    // then we check if the file has been uploaded properly
    // in its *temporary* location in the server (often, it is /tmp)
    if ($handle->uploaded) {

        // now, we start the upload 'process'. That is, to copy the uploaded file
        // from its temporary location to the wanted location
        // It could be something like $handle->Process('/home/www/my_uploads/');
        $handle->Process($dir_dest);

        // we check if everything went OK
        if ($handle->processed) {
            // everything was fine !
            echo 'ok';
        } else {
            // one error occured
            echo '  Error: ' . $handle->error . '';
        }

    } else {
        // if we're here, the upload file failed for some reasons
        // i.e. the server didn't receive the file
        echo '  Error: ' . $handle->error . '';
    }
}

What I'd like to do is to process each file inside the if ($handle->processed) {} so I took the function form the example that resize img and paste it inside the if ($handle->processed) {} part. Now it look like this:

if ($handle->uploaded) {

        // now, we start the upload 'process'. That is, to copy the uploaded file
        // from its temporary location to the wanted location
        // It could be something like $handle->Process('/home/www/my_uploads/');
        // now, we start a serie of processes, with different parameters
        // we use a little function TestProcess() to avoid repeting the same code too many times
        function TestProcess(&$handle, $title) {
            global $dir_pics, $dir_dest;

            $handle->Process($dir_dest);

            // we check if everything went OK
            if ($handle->processed) {
                // everything was fine !
                echo 'ok';
            } else {
                // one error occured
                echo '  Error: ' . $handle->error . '';
           }
        }
        if (!file_exists($dir_dest)) mkdir($dir_dest);

        // ----------- save the uploaded img adding _xl to the name
        $handle->file_name_body_add    = '_xl';
        $handle->file_overwrite = true;
        TestProcess($handle, 'File originale', '');

        // ----------- save the uploaded img adding _l to the name and downsizing it
        $handle->file_name_body_add    = '_l';
        $handle->image_resize          = true;
        $handle->image_ratio_y         = true;
        $handle->image_x               = 1024;
        $handle->file_overwrite = true;
        TestProcess($handle, 'Ridimensionato a 1024px');
    }

At this point the script works fine only with the first img. it not make the "foreach ($files as $file)" trow the $files array... could you help my find where the error is? thaks Daniele

Creator of the class here... You need to change the $files array first, as following. It is in the FAQ:

$files = array();
foreach ($_FILES['my_field'] as $k => $l) {
 foreach ($l as $i => $v) {
 if (!array_key_exists($i, $files))
   $files[$i] = array();
   $files[$i][$k] = $v;
 }
}