WordPress at a glance
action is not described

pre-plupload-upload-ui action-hook . WP 3.3.0

Fires before the upload interface loads.

Usage

add_action( 'pre-plupload-upload-ui', 'action_function_name_3557' );
function action_function_name_3557(){
	// action...
}

Список изменений

С версии 3.3.0 Введена.
С версии 2.6.0 As 'pre-flash-upload-ui'

Где вызывается хук

media_upload_form()
pre-plupload-upload-ui
wp_print_media_templates()
pre-plupload-upload-ui
wp-admin/includes/media.php 2202
do_action( 'pre-plupload-upload-ui' ); // phpcs:ignore WordPress.NamingConventions.ValidHookName.UseUnderscores
wp-includes/media-template.php 265
do_action( 'pre-plupload-upload-ui' ); // phpcs:ignore WordPress.NamingConventions.ValidHookName.UseUnderscores

Где используется хук в ядре WP

Использование не найдено.