Source

File: wp-includes/class-wp-xmlrpc-server.php

public function _getOptions( $options ) {
		$data       = array();
		$can_manage = current_user_can( 'manage_options' );
		foreach ( $options as $option ) {
			if ( array_key_exists( $option, $this->blog_options ) ) {
				$data[ $option ] = $this->blog_options[ $option ];
				// Is the value static or dynamic?
				if ( isset( $data[ $option ]['option'] ) ) {
					$data[ $option ]['value'] = get_option( $data[ $option ]['option'] );
					unset( $data[ $option ]['option'] );
				}

				if ( ! $can_manage ) {
					$data[ $option ]['readonly'] = true;
				}
			}
		}

		return $data;
	}