下面是对“一匹小马驹的答案”的扩展。这除了将文件上载到适当位置外，还将所述文件另存为附件：
<?php
// include js
add_action(\'admin_enqueue_scripts\', function($page){
// check if this your page here with the upload form!
if(($page !== \'post.php\') || (get_post_type() !== \'post\'))
return;
wp_enqueue_script(\'plupload-all\');
});
// this adds a simple metabox with the upload form on the edit-post page
add_action(\'add_meta_boxes\', function(){
add_meta_box(\'gallery_photos\', __(\'Photos\'), \'upload_meta_box\', \'post\', \'normal\', \'high\');
});
// so here\'s the actual uploader
// most of the code comes from media.php and handlers.js
function upload_meta_box(){ ?>
<div id="plupload-upload-ui" class="hide-if-no-js">
<div id="drag-drop-area">
<div class="drag-drop-inside">
<p class="drag-drop-info"><?php _e(\'Drop files here\'); ?></p>
<p><?php _ex(\'or\', \'Uploader: Drop files here - or - Select Files\'); ?></p>
<p class="drag-drop-buttons"><input id="plupload-browse-button" type="button" value="<?php esc_attr_e(\'Select Files\'); ?>" class="button" /></p>
</div>
</div>
</div>
<?php
$plupload_init = array(
\'runtimes\' => \'html5,silverlight,flash,html4\',
\'browse_button\' => \'plupload-browse-button\',
\'container\' => \'plupload-upload-ui\',
\'drop_element\' => \'drag-drop-area\',
\'file_data_name\' => \'async-upload\',
\'multiple_queues\' => true,
\'max_file_size\' => wp_max_upload_size().\'b\',
\'url\' => admin_url(\'admin-ajax.php\'),
\'flash_swf_url\' => includes_url(\'js/plupload/plupload.flash.swf\'),
\'silverlight_xap_url\' => includes_url(\'js/plupload/plupload.silverlight.xap\'),
\'filters\' => array(array(\'title\' => __(\'Allowed Files\'), \'extensions\' => \'*\')),
\'multipart\' => true,
\'urlstream_upload\' => true,
// additional post data to send to our ajax hook
\'multipart_params\' => array(
\'_ajax_nonce\' => wp_create_nonce(\'photo-upload\'),
\'action\' => \'photo_gallery_upload\', // the ajax action name
),
);
// we should probably not apply this filter, plugins may expect wp\'s media uploader...
$plupload_init = apply_filters(\'plupload_init\', $plupload_init); ?>
<script type="text/javascript">
jQuery(document).ready(function($){
// create the uploader and pass the config from above
var uploader = new plupload.Uploader(<?php echo json_encode($plupload_init); ?>);
// checks if browser supports drag and drop upload, makes some css adjustments if necessary
uploader.bind(\'Init\', function(up){
var uploaddiv = $(\'#plupload-upload-ui\');
if(up.features.dragdrop){
uploaddiv.addClass(\'drag-drop\');
$(\'#drag-drop-area\')
.bind(\'dragover.wp-uploader\', function(){ uploaddiv.addClass(\'drag-over\'); })
.bind(\'dragleave.wp-uploader, drop.wp-uploader\', function(){ uploaddiv.removeClass(\'drag-over\'); });
}else{
uploaddiv.removeClass(\'drag-drop\');
$(\'#drag-drop-area\').unbind(\'.wp-uploader\');
}
});
uploader.init();
// a file was added in the queue
uploader.bind(\'FilesAdded\', function(up, files){
var hundredmb = 100 * 1024 * 1024, max = parseInt(up.settings.max_file_size, 10);
plupload.each(files, function(file){
if (max > hundredmb && file.size > hundredmb && up.runtime != \'html5\'){
// file size error?
}else{
// a file was added, you may want to update your DOM here...
console.log(file);
}
});
up.refresh();
up.start();
});
// a file was uploaded
uploader.bind(\'FileUploaded\', function(up, file, response) {
// this is your ajax response, update the DOM with it or something...
console.log(response);
});
});
</script>
<?php
}
// handle uploaded file here
add_action(\'wp_ajax_photo_gallery_upload\', function(){
check_ajax_referer(\'photo-upload\');
// you can use WP\'s wp_handle_upload() function:
$file = $_FILES[\'async-upload\'];
$status = wp_handle_upload($file, array(\'test_form\'=>true, \'action\' => \'photo_gallery_upload\'));
// and output the results or something...
echo \'Uploaded to: \'.$status[\'url\'];
//Adds file as attachment to WordPress
echo "\\n Attachment ID: " .wp_insert_attachment( array(
\'post_mime_type\' => $status[\'type\'],
\'post_title\' => preg_replace(\'/\\.[^.]+$/\', \'\', basename($file[\'name\'])),
\'post_content\' => \'\',
\'post_status\' => \'inherit\'
), $status[\'file\']);
exit;
});
?>
