wp_terms_checklist early trigger a filter \'wp_terms_checklist_args\' 因此，您可以使用该过滤器添加过滤器，并在第一次运行时自动删除它。

然而，这应该足够了，一旦挂钩是全局变量，为了确保更好地使用更强大的检查，函数中的静态变量是一个简单而好的技巧：

function switch_terms_filter( $_set = NULL ) {
  static $set;
  if ( ! is_null($_set) ) $set = $_set;
  return $set;
}

add_filter( \'wp_terms_checklist_args\', function( $args ) {

  // turn the switch ON
  switch_terms_filter(1);

  add_filter( \'get_terms\', \'your_filter_callback\', 10, 3 );

  return $args; // we don\'t want to affect wp_terms_checklist $args
} );


function your_filter_callback( $terms, $taxonomies, $args ) {
  // remove filter after 1st run
  remove_filter( current_filter(), __FUNCTION__, 10, 3 );

  // is the switch ON? If not do nothing.
  if ( switch_terms_filter() !== 1 ) return $terms;

  switch_terms_filter(0); // turn the switch OFF

  // ... filter terms here ...
  return $terms;
}