Source View: akismet_optimize_table

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Understanding Source Code

The best way to understand what a hook does is to look at where it occurs in the source code.

  • Action hooks look like this: do_action( "hook_name" )
  • Filter hooks look like this: 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.

Source View

Line Code
430           return;
431           
432      $comma_comment_ids = implode( ', ', array_map('intval', $comment_ids) );
433
434      do_action( 'delete_comment', $comment_ids );
435      $wpdb->query("DELETE FROM $wpdb->comments WHERE comment_id IN ( $comma_comment_ids )");
436      $wpdb->query("DELETE FROM $wpdb->commentmeta WHERE comment_id IN ( $comma_comment_ids )");
437      clean_comment_cache( $comment_ids );
438      $n = mt_rand(1, 5000);
439      if ( apply_filters('akismet_optimize_table', ($n == 11)) ) // lucky number
440           $wpdb->query("OPTIMIZE TABLE $wpdb->comments");
441
442 }
443
444 function akismet_delete_old_metadata() { 
445      global $wpdb; 
446
447      $now_gmt = current_time( 'mysql', 1 ); 
448      $interval = apply_filters( 'akismet_delete_commentmeta_interval', 15 );