一种简单的方法是使用静态变量存储作者姓名，然后在以后的挂钩上再次运行相同的函数，可能是“posts\\u results”，然后设置回变量：

function wpquery( $query, $query_on_results = NULL ) {
  static $author_name = NULL;
  if ( current_filter() === \'pre_get_posts\' ) {
    if ( $query->is_author() && $query->is_main_query() ) {
      $query->set( \'post_status\', $post_status );
      $author_name =  $query->query_vars[\'author_name\'];
      unset( $query->query_vars[\'author_name\'] ); 
      $tax_query = array(  
        array(
         \'taxonomy\' => \'tax\',
         \'field\' => \'name\',
         \'terms\' => $var
        )
      );
      $query->set( \'tax_query\', $tax_query );
    } 
  } elseif ( current_filter() === \'posts_results\' ) {
    if ( $query_on_results->is_main_query() && ! empty( $author_name ) ) {
      $query_on_results->query_vars[\'author_name\'] = $author_name;
      $author_name = NULL;
      remove_filter( current_filter(), __FUNCTION__, 20, 2 );
    }
    // $query represent the 1st arg passed to function, that on posts_result hook
    // is the retrieved posts array. Always return it as is to do not alter results
    return $query;
  }
}   

add_action( \'pre_get_posts\', \'wpquery\' );

add_filter( \'posts_results\', \'wpquery\', 20, 2 );