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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.
This hook occurs 2 times in this file.
| Line | Code |
|---|---|
| 1213 | $cjoin = "LEFT JOIN $wpdb->posts ON ($wpdb->comments.comment_post_ID = $wpdb->posts.ID) $join "; |
| 1214 | $cwhere = "WHERE comment_approved = '1' $where"; |
| 1215 | $cgroupby = "GROUP BY $wpdb->comments.comment_id"; |
| 1216 | } else { // Other non singular e.g. front |
| 1217 | $cjoin = "LEFT JOIN $wpdb->posts ON ( $wpdb->comments.comment_post_ID = $wpdb->posts.ID )"; |
| 1218 | $cwhere = "WHERE post_status = 'publish' AND comment_approved = '1'"; |
| 1219 | $cgroupby = ''; |
| 1220 | } |
| 1221 | |
| 1222 | $cjoin = apply_filters('comment_feed_join', $cjoin); |
| 1223 | $cwhere = apply_filters('comment_feed_where', $cwhere); |
| 1224 | $cgroupby = apply_filters('comment_feed_groupby', $cgroupby); |
| 1225 | |
| 1226 | $this->comments = (array) $wpdb->get_results("SELECT $distinct $wpdb->comments.* FROM $wpdb->comments $cjoin $cwhere $cgroupby ORDER BY comment_date_gmt DESC LIMIT " . get_option('posts_per_rss')); |
| 1227 | $this->comment_count = count($this->comments); |
| 1228 | |
| 1229 | $post_ids = array(); |
| 1230 | |
| 1231 | foreach ($this->comments as $comment) |
| Line | Code |
| 1262 | |
| 1263 | $request = " SELECT $found_rows $distinct $fields FROM $wpdb->posts $join WHERE 1=1 $where $groupby $orderby $limits"; |
| 1264 | $this->request = apply_filters('posts_request', $request); |
| 1265 | |
| 1266 | $this->posts = $wpdb->get_results($this->request); |
| 1267 | // Raw results filter. Prior to status checks. |
| 1268 | $this->posts = apply_filters('posts_results', $this->posts); |
| 1269 | |
| 1270 | if ( $this->is_comment_feed && $this->is_singular ) { |
| 1271 | $cjoin = apply_filters('comment_feed_join', ''); |
| 1272 | $cwhere = apply_filters('comment_feed_where', "WHERE comment_post_ID = {$this->posts[0]->ID} AND comment_approved = '1'"); |
| 1273 | $comments_request = "SELECT $wpdb->comments.* FROM $wpdb->comments $cjoin $cwhere ORDER BY comment_date_gmt DESC LIMIT " . get_option('posts_per_rss'); |
| 1274 | $this->comments = $wpdb->get_results($comments_request); |
| 1275 | $this->comment_count = count($this->comments); |
| 1276 | } |
| 1277 | |
| 1278 | if ( !empty($limits) ) { |
| 1279 | $found_posts_query = apply_filters( 'found_posts_query', 'SELECT FOUND_ROWS()' ); |
| 1280 | $this->found_posts = $wpdb->get_var( $found_posts_query ); |