rest_default_additional_properties_to_false( array $schema )
Sets the “additionalProperties” to false by default for all object definitions in the schema.
Parameters
- $schema
-  (array) (Required) The schema to modify. 
Return
(array) The modified schema.
Source
File: wp-includes/rest-api.php
function rest_default_additional_properties_to_false( $schema ) {
	$type = (array) $schema['type'];
	if ( in_array( 'object', $type, true ) ) {
		if ( isset( $schema['properties'] ) ) {
			foreach ( $schema['properties'] as $key => $child_schema ) {
				$schema['properties'][ $key ] = rest_default_additional_properties_to_false( $child_schema );
			}
		}
		if ( isset( $schema['patternProperties'] ) ) {
			foreach ( $schema['patternProperties'] as $key => $child_schema ) {
				$schema['patternProperties'][ $key ] = rest_default_additional_properties_to_false( $child_schema );
			}
		}
		if ( ! isset( $schema['additionalProperties'] ) ) {
			$schema['additionalProperties'] = false;
		}
	}
	if ( in_array( 'array', $type, true ) ) {
		if ( isset( $schema['items'] ) ) {
			$schema['items'] = rest_default_additional_properties_to_false( $schema['items'] );
		}
	}
	return $schema;
}  Changelog
| Version | Description | 
|---|---|
| 5.6.0 | Support the "patternProperties" keyword. | 
| 5.5.0 | Introduced. | 
    © 2003–2021 WordPress Foundation
Licensed under the GNU GPLv2+ License.
    https://developer.wordpress.org/reference/functions/rest_default_additional_properties_to_false