/usr/lib/tmpfiles.d/php7.0-fpm.conf is in php7.0-fpm 7.0.4-7ubuntu2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 | #Type Path Mode UID GID Age Argument
d /run/php 0755 www-data www-data - -
|