wpdb::flush()

1921	public function flush() {1922		$this->last_result   = array();1923		$this->col_info      = null;1924		$this->last_query    = null;1925		$this->rows_affected = 0;1926		$this->num_rows      = 0;1927		$this->last_error    = '';1928 1929		if ( $this->result instanceof mysqli_result ) {1930			mysqli_free_result( $this->result );1931			$this->result = null;1932 1933			// Confidence check before using the handle.1934			if ( empty( $this->dbh ) || ! ( $this->dbh instanceof mysqli ) ) {1935				return;1936			}1937 1938			// Clear out any results from a multi-query.1939			while ( mysqli_more_results( $this->dbh ) ) {1940				mysqli_next_result( $this->dbh );1941			}1942		}1943	}