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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 |
|---|---|
| 2394 | |
| 2395 | /** |
| 2396 | * Fires immediately before the setting is unregistered and after its filters have been removed. |
| 2397 | * |
| 2398 | * @since 5.5.0 |
| 2399 | * |
| 2400 | * @param string $option_group Setting group. |
| 2401 | * @param string $option_name Setting name. |
| 2402 | */ |
| 2403 | do_action( 'unregister_setting', $option_group, $option_name ); |
| 2404 | |
| 2405 | unset( $wp_registered_settings[ $option_name ] ); |
| 2406 | } |
| 2407 | } |
| 2408 | |
| 2409 | /** |
| 2410 | * Retrieves an array of registered settings. |
| 2411 | * |
| 2412 | * @since 4.7.0 |