WP hooks navigation: Home/browse • Actions index • Filters index
To save our bandwidth, we show only a snippet of code around each occurence of the hook. View complete file in SVN (without highlighting).
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 |
|---|---|
| 139 | /** |
| 140 | * Filters the categories before building the category list. |
| 141 | * |
| 142 | * @since 4.4.0 |
| 143 | * |
| 144 | * @param WP_Term[] $categories An array of the post's categories. |
| 145 | * @param int|bool $post_id ID of the post we're retrieving categories for. When `false`, we assume the |
| 146 | * current post in the loop. |
| 147 | */ |
| 148 | $categories = apply_filters( 'the_category_list', get_the_category( $post_id ), $post_id ); |
| 149 | |
| 150 | if ( empty( $categories ) ) { |
| 151 | /** This filter is documented in wp-includes/category-template.php */ |
| 152 | return apply_filters( 'the_category', __( 'Uncategorized' ), $separator, $parents ); |
| 153 | } |
| 154 | |
| 155 | $rel = ( is_object( $wp_rewrite ) && $wp_rewrite->using_permalinks() ) ? 'rel="category tag"' : 'rel="category"'; |
| 156 | |
| 157 | $thelist = ''; |