多次上传并调整class.upload.php的大小

Question

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

Answer 1

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;
 }
}