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

Source

function rest_validate_array_value_from_schema( $value, $args, $param ) {
	if ( ! rest_is_array( $value ) ) {
		return new WP_Error(
			'rest_invalid_type',
			/* translators: 1: Parameter, 2: Type name. */
			sprintf( __( '%1$s is not of type %2$s.' ), $param, 'array' ),
			array( 'param' => $param )
		);
	}

	$value = rest_sanitize_array( $value );

	if ( isset( $args['items'] ) ) {
		foreach ( $value as $index => $v ) {
			$is_valid = rest_validate_value_from_schema( $v, $args['items'], $param . '[' . $index . ']' );
			if ( is_wp_error( $is_valid ) ) {
				return $is_valid;
			}
		}
	}

	if ( isset( $args['minItems'] ) && count( $value ) < $args['minItems'] ) {
		return new WP_Error(
			'rest_too_few_items',
			sprintf(
				/* translators: 1: Parameter, 2: Number. */
				_n(
					'%1$s must contain at least %2$s item.',
					'%1$s must contain at least %2$s items.',
					$args['minItems']
				),
				$param,
				number_format_i18n( $args['minItems'] )
			)
		);
	}

	if ( isset( $args['maxItems'] ) && count( $value ) > $args['maxItems'] ) {
		return new WP_Error(
			'rest_too_many_items',
			sprintf(
				/* translators: 1: Parameter, 2: Number. */
				_n(
					'%1$s must contain at most %2$s item.',
					'%1$s must contain at most %2$s items.',
					$args['maxItems']
				),
				$param,
				number_format_i18n( $args['maxItems'] )
			)
		);
	}

	if ( ! empty( $args['uniqueItems'] ) && ! rest_validate_array_contains_unique_items( $value ) ) {
		/* translators: %s: Parameter. */
		return new WP_Error( 'rest_duplicate_items', sprintf( __( '%s has duplicate items.' ), $param ) );
	}

	return true;
}

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