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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 |
|---|---|
| 937 | $new = (int) $wpdb->get_var( $wpdb->prepare("SELECT COUNT(*) FROM $wpdb->comments WHERE comment_post_ID = %d AND comment_approved = '1'", $post_id) ); |
| 938 | $wpdb->query( $wpdb->prepare("UPDATE $wpdb->posts SET comment_count = %d WHERE ID = %d", $new, $post_id) ); |
| 939 | |
| 940 | if ( 'page' == $post->post_type ) |
| 941 | clean_page_cache( $post_id ); |
| 942 | else |
| 943 | clean_post_cache( $post_id ); |
| 944 | |
| 945 | do_action('wp_update_comment_count', $post_id, $new, $old); |
| 946 | do_action('edit_post', $post_id, $post); |
| 947 | |
| 948 | return true; |
| 949 | } |
| 950 | |
| 951 | // |
| 952 | // Ping and trackback functions. |
| 953 | // |
| 954 | |
| 955 | /** |