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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 |
---|---|
2361 | /** |
2362 | * Fires immediately before the setting is registered but after its filters are in place. |
2363 | * |
2364 | * @since 5.5.0 |
2365 | * |
2366 | * @param string $option_group Setting group. |
2367 | * @param string $option_name Setting name. |
2368 | * @param array $args Array of setting registration arguments. |
2369 | */ |
2370 | do_action( 'register_setting', $option_group, $option_name, $args ); |
2371 |
|
2372 | $wp_registered_settings[ $option_name ] = $args; |
2373 | } |
2374 |
|
2375 | /** |
2376 | * Unregisters a setting. |
2377 | * |
2378 | * @since 2.7.0 |
2379 | * @since 4.7.0 `$sanitize_callback` was deprecated. The callback from `register_setting()` is now used instead. |