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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 |
|---|---|
| 189 | $wpdb->query( "UPDATE $wpdb->posts SET comment_count = '$c->c' WHERE ID = '$comment_post_ID'" ); |
| 190 | |
| 191 | do_action('edit_comment', $comment_ID); |
| 192 | |
| 193 | return $rval; |
| 194 | } |
| 195 | |
| 196 | function wp_delete_comment($comment_id) { |
| 197 | global $wpdb; |
| 198 | do_action('delete_comment', $comment_id); |
| 199 | |
| 200 | $comment = get_comment($comment_id); |
| 201 | |
| 202 | if ( ! $wpdb->query("DELETE FROM $wpdb->comments WHERE comment_ID='$comment_id' LIMIT 1") ) |
| 203 | return false; |
| 204 | |
| 205 | $post_id = $comment->comment_post_ID; |
| 206 | if ( $post_id && $comment->comment_approved == 1 ) |
| 207 | $wpdb->query( "UPDATE $wpdb->posts SET comment_count = comment_count - 1 WHERE ID = '$post_id'" ); |