rest_validate_enum( mixed $value, array $args, string $param ): true|WP_Error

2097function rest_validate_enum( $value, $args, $param ) {2098	$sanitized_value = rest_sanitize_value_from_schema( $value, $args, $param );2099	if ( is_wp_error( $sanitized_value ) ) {2100		return $sanitized_value;2101	}2102 2103	foreach ( $args['enum'] as $enum_value ) {2104		if ( rest_are_values_equal( $sanitized_value, $enum_value ) ) {2105			return true;2106		}2107	}2108 2109	$encoded_enum_values = array();2110	foreach ( $args['enum'] as $enum_value ) {2111		$encoded_enum_values[] = is_scalar( $enum_value ) ? $enum_value : wp_json_encode( $enum_value );2112	}2113 2114	if ( count( $encoded_enum_values ) === 1 ) {2115		/* translators: 1: Parameter, 2: Valid values. */2116		return new WP_Error( 'rest_not_in_enum', wp_sprintf( __( '%1$s is not %2$s.' ), $param, $encoded_enum_values[0] ) );2117	}2118 2119	/* translators: 1: Parameter, 2: List of valid values. */2120	return new WP_Error( 'rest_not_in_enum', wp_sprintf( __( '%1$s is not one of %2$l.' ), $param, $encoded_enum_values ) );2121}