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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 |
|---|---|
| 1207 | $old = (int) $post->comment_count; |
| 1208 | $new = (int) $wpdb->get_var( $wpdb->prepare("SELECT COUNT(*) FROM $wpdb->comments WHERE comment_post_ID = %d AND comment_approved = '1'", $post_id) ); |
| 1209 | $wpdb->query( $wpdb->prepare("UPDATE $wpdb->posts SET comment_count = %d WHERE ID = %d", $new, $post_id) ); |
| 1210 | |
| 1211 | if ( 'page' == $post->post_type ) |
| 1212 | clean_page_cache( $post_id ); |
| 1213 | else |
| 1214 | clean_post_cache( $post_id ); |
| 1215 | |
| 1216 | do_action('wp_update_comment_count', $post_id, $new, $old); |
| 1217 | do_action('edit_post', $post_id, $post); |
| 1218 | |
| 1219 | return true; |
| 1220 | } |
| 1221 | |
| 1222 | // |
| 1223 | // Ping and trackback functions. |
| 1224 | // |
| 1225 | |