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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 |
|---|---|
| 529 | * Fires when the WP_Customize_Setting::save() method is called. |
| 530 | * |
| 531 | * The dynamic portion of the hook name, `$id_base` refers to |
| 532 | * the base slug of the setting name. |
| 533 | * |
| 534 | * @since 3.4.0 |
| 535 | * |
| 536 | * @param WP_Customize_Setting $setting WP_Customize_Setting instance. |
| 537 | */ |
| 538 | do_action( "customize_save_{$id_base}", $this ); |
| 539 | |
| 540 | $this->update( $value ); |
| 541 | } |
| 542 | |
| 543 | /** |
| 544 | * Fetch and sanitize the $_POST value for the setting. |
| 545 | * |
| 546 | * During a save request prior to save, post_value() provides the new value while value() does not. |
| 547 | * |