wp_privacy_delete_old_export_files() WordPress Function

function wp_privacy_delete_old_export_files() {
	$exports_dir = wp_privacy_exports_dir();
	if ( ! is_dir( $exports_dir ) ) {
		return;
	}

	require_once ABSPATH . 'wp-admin/includes/file.php';
	$export_files = list_files( $exports_dir, 100, array( 'index.php' ) );

	/**
	 * Filters the lifetime, in seconds, of a personal data export file.
	 *
	 * By default, the lifetime is 3 days. Once the file reaches that age, it will automatically
	 * be deleted by a cron job.
	 *
	 * @since 4.9.6
	 *
	 * @param int $expiration The expiration age of the export, in seconds.
	 */
	$expiration = apply_filters( 'wp_privacy_export_expiration', 3 * DAY_IN_SECONDS );

	foreach ( (array) $export_files as $export_file ) {
		$file_age_in_seconds = time() - filemtime( $export_file );

		if ( $expiration < $file_age_in_seconds ) {
			unlink( $export_file );
		}
	}
}