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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 |
|---|---|
| 745 | public function wp_loaded() { |
| 746 | |
| 747 | /** |
| 748 | * Fires once WordPress has loaded, allowing scripts and styles to be initialized. |
| 749 | * |
| 750 | * @since 3.4.0 |
| 751 | * |
| 752 | * @param WP_Customize_Manager $this WP_Customize_Manager instance. |
| 753 | */ |
| 754 | do_action( 'customize_register', $this ); |
| 755 | |
| 756 | /* |
| 757 | * Note that settings must be previewed here even outside the customizer preview |
| 758 | * and also in the customizer pane itself. This is to enable loading an existing |
| 759 | * changeset into the customizer. Previewing the settings only has to be prevented |
| 760 | * in the case of a customize_save action because then update_option() |
| 761 | * may short-circuit because it will detect that there are no changes to |
| 762 | * make. |
| 763 | */ |