/usr/share/php/ is in php-react-promise 2.2.1-1build1.
This file is owned by root:root, with mode 0o755.
..
/usr/share/php/React/
/usr/share/php/React/Promise/
/usr/share/php/React/Promise/Deferred.php
/usr/share/php/React/Promise/FulfilledPromise.php
/usr/share/php/React/Promise/functions.php
/usr/share/php/React/Promise/ExtendedPromiseInterface.php
/usr/share/php/React/Promise/UnhandledRejectionException.php
/usr/share/php/React/Promise/PromiseInterface.php
/usr/share/php/React/Promise/PromisorInterface.php
/usr/share/php/React/Promise/CancellablePromiseInterface.php
/usr/share/php/React/Promise/Promise.php
/usr/share/php/React/Promise/autoload.php
/usr/share/php/React/Promise/functions_include.php
/usr/share/php/React/Promise/LazyPromise.php
/usr/share/php/React/Promise/RejectedPromise.php