WP_Importer::get_imported_posts( string $importer_name, string $blog_id ): array

26	public function get_imported_posts( $importer_name, $blog_id ) {27		global $wpdb;28 29		$hashtable = array();30 31		$limit  = 100;32		$offset = 0;33 34		// Grab all posts in chunks.35		do {36			$meta_key = $importer_name . '_' . $blog_id . '_permalink';37			$results  = $wpdb->get_results(38				$wpdb->prepare(39					"SELECT post_id, meta_value FROM $wpdb->postmeta WHERE meta_key = %s LIMIT %d,%d",40					$meta_key,41					$offset,42					$limit43				)44			);45 46			// Increment offset.47			$offset = ( $limit + $offset );48 49			if ( ! empty( $results ) ) {50				foreach ( $results as $r ) {51					// Set permalinks into array.52					$hashtable[ $r->meta_value ] = (int) $r->post_id;53				}54			}55		} while ( count( $results ) === $limit );56 57		return $hashtable;58	}