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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 |
|---|---|
| 2243 | * Filters the registration arguments when registering a setting. |
| 2244 | * |
| 2245 | * @since 4.7.0 |
| 2246 | * |
| 2247 | * @param array $args Array of setting registration arguments. |
| 2248 | * @param array $defaults Array of default arguments. |
| 2249 | * @param string $option_group Setting group. |
| 2250 | * @param string $option_name Setting name. |
| 2251 | */ |
| 2252 | $args = apply_filters( 'register_setting_args', $args, $defaults, $option_group, $option_name ); |
| 2253 | |
| 2254 | $args = wp_parse_args( $args, $defaults ); |
| 2255 | |
| 2256 | // Require an item schema when registering settings with an array type. |
| 2257 | if ( false !== $args['show_in_rest'] && 'array' === $args['type'] && ( ! is_array( $args['show_in_rest'] ) || ! isset( $args['show_in_rest']['schema']['items'] ) ) ) { |
| 2258 | _doing_it_wrong( __FUNCTION__, __( 'When registering an "array" setting to show in the REST API, you must specify the schema for each array item in "show_in_rest.schema.items".' ), '5.4.0' ); |
| 2259 | } |
| 2260 | |
| 2261 | if ( ! is_array( $wp_registered_settings ) ) { |