get_caller example

        }
        $EZSQL_ERROR[] = array(
            'query'     => $this->last_query,
            'error_str' => $str,
        );

        if ( $this->suppress_errors ) {
            return false;
        }

        $caller = $this->get_caller();
        if ( $caller ) {
            // Not translated, as this will only appear in the error log.             $error_str = sprintf( 'WordPress database error %1$s for query %2$s made by %3$s', $str, $this->last_query, $caller );
        } else {
            $error_str = sprintf( 'WordPress database error %1$s for query %2$s', $str, $this->last_query );
        }

        error_log( $error_str );

        // Are we showing errors?         if ( ! $this->show_errors ) {