WordPress at a glance
filter is not described

export_wp_filename filter-hook . WP 4.4.0

Filters the export filename.

Usage

add_filter( 'export_wp_filename', 'filter_function_name_1343', 10, 3 );
function filter_function_name_1343( $wp_filename, $sitename, $date ){
	// filter...

	return $wp_filename;
}
$wp_filename(string)
The name of the file for download.
$sitename(string)
The site name.
$date(string)
Today's date, formatted.

Where the hook is called

export_wp()
wp-admin/includes/export.php 88
$filename = apply_filters( 'export_wp_filename', $wp_filename, $sitename, $date );

Where the hook is used (in WP core)

Does not used.