Source View: widget_display_callback

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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
375                 *
376                 * Returning false will effectively short-circuit display of the widget.
377                 *
378                 * @since 2.8.0
379                 *
380                 * @param array     $instance The current widget instance's settings.
381                 * @param WP_Widget $this     The current widget instance.
382                 * @param array     $args     An array of default widget arguments.
383                 */
384                $instance = apply_filters( 'widget_display_callback', $instance, $this, $args );
385
386                if ( false === $instance ) {
387                     return;
388                }
389
390                $was_cache_addition_suspended = wp_suspend_cache_addition();
391                if ( $this->is_preview() && ! $was_cache_addition_suspended ) {
392                     wp_suspend_cache_addition( true );
393                }