* Server-side file upload handler from wp-plupload or other asynchronous upload methods.
// Title shouldn't ever be empty, but use filename just in case.
<strong>' . sprintf( __( '&#8220;%s&#8221; has failed to upload.' ), esc_html( $_FILES['async-upload']['name'] ) ) . '</strong><br />' .
get_attached_file() – Retrieve attached file path based on attachment ID.
media_handle_upload() – Save a file submitted from a POST request and create an attachment post for it.
wp_get_attachment_image_src() – Retrieve an image to represent an attachment.
wp_html_excerpt() – Safely extracts not more than the first $count characters from html string.