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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 |
|---|---|
| 21 | |
| 22 | <?php |
| 23 | /** |
| 24 | * Allow child themes and plugins to filter the display of the categories in the entry header. |
| 25 | * |
| 26 | * @since Twenty Twenty 1.0 |
| 27 | * |
| 28 | * @param bool Whether to show the categories in header. Default true. |
| 29 | */ |
| 30 | $show_categories = apply_filters( 'twentytwenty_show_categories_in_entry_header', true ); |
| 31 | |
| 32 | if ( true === $show_categories && has_category() ) { |
| 33 | ?> |
| 34 | |
| 35 | <div class="entry-categories"> |
| 36 | <span class="screen-reader-text"><?php _e( 'Categories', 'twentytwenty' ); ?></span> |
| 37 | <div class="entry-categories-inner"> |
| 38 | <?php the_category( ' ' ); ?> |
| 39 | </div><!-- .entry-categories-inner --> |