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The best way to understand what a hook does is to look at where it occurs in the source code.
do_action( "hook_name" )apply_filters( "hook_name", "what_to_filter" ).Remember, this hook may occur in more than one file. Moreover, the hook's context may change from version to version.
| Line | Code |
|---|---|
| 157 | 'name' => 'parent', |
| 158 | 'orderby' => 'name', |
| 159 | 'selected' => $tag->parent, |
| 160 | 'exclude_tree' => $tag->term_id, |
| 161 | 'hierarchical' => true, |
| 162 | 'show_option_none' => __( 'None' ), |
| 163 | ); |
| 164 | |
| 165 | /** This filter is documented in wp-admin/edit-tags.php */ |
| 166 | $dropdown_args = apply_filters( 'taxonomy_parent_dropdown_args', $dropdown_args, $taxonomy, 'edit' ); |
| 167 | wp_dropdown_categories( $dropdown_args ); ?> |
| 168 | <?php if ( 'category' == $taxonomy ) : ?> |
| 169 | <p class="description"><?php _e('Categories, unlike tags, can have a hierarchy. You might have a Jazz category, and under that have children categories for Bebop and Big Band. Totally optional.'); ?></p> |
| 170 | <?php endif; ?> |
| 171 | </td> |
| 172 | </tr> |
| 173 | <?php endif; // is_taxonomy_hierarchical() ?> |
| 174 | <tr class="form-field term-description-wrap"> |
| 175 | <th scope="row"><label for="description"><?php _e( 'Description' ); ?></label></th> |