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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 |
|---|---|
| 1141 | * @param string $after Optional. After list. |
| 1142 | * @return null|bool False on WordPress error. Returns null when displaying. |
| 1143 | */ |
| 1144 | function the_terms( $id = 0, $taxonomy, $before = '', $sep = ', ', $after = '' ) { |
| 1145 | $term_list = get_the_term_list( $id, $taxonomy, $before, $sep, $after ); |
| 1146 | |
| 1147 | if ( is_wp_error( $term_list ) ) |
| 1148 | return false; |
| 1149 | |
| 1150 | echo apply_filters('the_terms', $term_list, $taxonomy, $before, $sep, $after); |
| 1151 | } |
| 1152 | |
| 1153 | |
| 1154 | /** |
| 1155 | * Check if the current post has any of given category. |
| 1156 | * |
| 1157 | * @since 3.1.0 |
| 1158 | * |
| 1159 | * @param string|int|array $tag Optional. The category name/term_id/slug or array of them to check for. |