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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 |
|---|---|
| 343 | * in a theme. |
| 344 | * |
| 345 | * @since 4.4.0 |
| 346 | * |
| 347 | * @see WP_Customize_Manager::__construct() |
| 348 | * |
| 349 | * @param array $components List of core components to load. |
| 350 | * @param WP_Customize_Manager $this WP_Customize_Manager instance. |
| 351 | */ |
| 352 | $components = apply_filters( 'customize_loaded_components', $this->components, $this ); |
| 353 | |
| 354 | require_once( ABSPATH . WPINC . '/customize/class-wp-customize-selective-refresh.php' ); |
| 355 | $this->selective_refresh = new WP_Customize_Selective_Refresh( $this ); |
| 356 | |
| 357 | if ( in_array( 'widgets', $components, true ) ) { |
| 358 | require_once( ABSPATH . WPINC . '/class-wp-customize-widgets.php' ); |
| 359 | $this->widgets = new WP_Customize_Widgets( $this ); |
| 360 | } |
| 361 | |