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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 |
|---|---|
| 2756 | * |
| 2757 | * Plugins can add just-in-time {@see 'customize_validate_{$this->ID}'} filters |
| 2758 | * at this point to catch any settings registered after `customize_register`. |
| 2759 | * The dynamic portion of the hook name, `$this->ID` refers to the setting ID. |
| 2760 | * |
| 2761 | * @since 4.6.0 |
| 2762 | * |
| 2763 | * @param WP_Customize_Manager $this WP_Customize_Manager instance. |
| 2764 | */ |
| 2765 | do_action( 'customize_save_validation_before', $this ); |
| 2766 | |
| 2767 | // Validate settings. |
| 2768 | $validated_values = array_merge( |
| 2769 | array_fill_keys( array_keys( $args['data'] ), null ), // Make sure existence/capability checks are done on value-less setting updates. |
| 2770 | $post_values |
| 2771 | ); |
| 2772 | $setting_validities = $this->validate_setting_values( |
| 2773 | $validated_values, |
| 2774 | array( |