wp_uninitialize_site( int|WP_Site $site_id ): true|WP_Error

784function wp_uninitialize_site( $site_id ) {785	global $wpdb;786 787	if ( empty( $site_id ) ) {788		return new WP_Error( 'site_empty_id', __( 'Site ID must not be empty.' ) );789	}790 791	$site = get_site( $site_id );792	if ( ! $site ) {793		return new WP_Error( 'site_invalid_id', __( 'Site with the ID does not exist.' ) );794	}795 796	if ( ! wp_is_site_initialized( $site ) ) {797		return new WP_Error( 'site_already_uninitialized', __( 'The site appears to be already uninitialized.' ) );798	}799 800	$users = get_users(801		array(802			'blog_id' => $site->id,803			'fields'  => 'ids',804		)805	);806 807	// Remove users from the site.808	if ( ! empty( $users ) ) {809		foreach ( $users as $user_id ) {810			remove_user_from_blog( $user_id, $site->id );811		}812	}813 814	$switch = false;815	if ( get_current_blog_id() !== $site->id ) {816		$switch = true;817		switch_to_blog( $site->id );818	}819 820	$uploads = wp_get_upload_dir();821 822	$tables = $wpdb->tables( 'blog' );823 824	/**825	 * Filters the tables to drop when the site is deleted.826	 *827	 * @since MU (3.0.0)828	 *829	 * @param string[] $tables  Array of names of the site tables to be dropped.830	 * @param int      $site_id The ID of the site to drop tables for.831	 */832	$drop_tables = apply_filters( 'wpmu_drop_tables', $tables, $site->id );833 834	foreach ( (array) $drop_tables as $table ) {835		$wpdb->query( "DROP TABLE IF EXISTS `$table`" ); // phpcs:ignore WordPress.DB.PreparedSQL.NotPrepared836	}837 838	/**839	 * Filters the upload base directory to delete when the site is deleted.840	 *841	 * @since MU (3.0.0)842	 *843	 * @param string $basedir Uploads path without subdirectory. See {@see wp_upload_dir()}.844	 * @param int    $site_id The site ID.845	 */846	$dir     = apply_filters( 'wpmu_delete_blog_upload_dir', $uploads['basedir'], $site->id );847	$dir     = rtrim( $dir, DIRECTORY_SEPARATOR );848	$top_dir = $dir;849	$stack   = array( $dir );850	$index   = 0;851 852	while ( $index < count( $stack ) ) {853		// Get indexed directory from stack.854		$dir = $stack[ $index ];855 856		// phpcs:disable WordPress.PHP.NoSilencedErrors.Discouraged857		$dh = @opendir( $dir );858		if ( $dh ) {859			$file = @readdir( $dh );860			while ( false !== $file ) {861				if ( '.' === $file || '..' === $file ) {862					$file = @readdir( $dh );863					continue;