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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 |
|---|---|
| 223 | global $wpdb, $comment_count_cache, $id; |
| 224 | $post_id = (int) $post_id; |
| 225 | |
| 226 | if ( !$post_id ) |
| 227 | $post_id = (int) $id; |
| 228 | |
| 229 | if ( !isset($comment_count_cache[$post_id]) ) |
| 230 | $comment_count_cache[$id] = $wpdb->get_var("SELECT comment_count FROM $wpdb->posts WHERE ID = '$post_id'"); |
| 231 | |
| 232 | return apply_filters('get_comments_number', $comment_count_cache[$post_id]); |
| 233 | } |
| 234 | |
| 235 | function comments_number( $zero = 'No Comments', $one = '1 Comment', $more = '% Comments', $number = '' ) { |
| 236 | global $id, $comment; |
| 237 | $number = get_comments_number( $id ); |
| 238 | if ($number == 0) { |
| 239 | $blah = $zero; |
| 240 | } elseif ($number == 1) { |
| 241 | $blah = $one; |