/usr/share/php/ is in php-symfony-process 2.3.21+dfsg-4+deb8u3.
This file is owned by root:root, with mode 0o755.
..
/usr/share/php/Symfony/
/usr/share/php/Symfony/Component/
/usr/share/php/Symfony/Component/Process/
/usr/share/php/Symfony/Component/Process/ProcessUtils.php
/usr/share/php/Symfony/Component/Process/ProcessPipes.php
/usr/share/php/Symfony/Component/Process/ProcessBuilder.php
/usr/share/php/Symfony/Component/Process/Process.php
/usr/share/php/Symfony/Component/Process/PhpProcess.php
/usr/share/php/Symfony/Component/Process/PhpExecutableFinder.php
/usr/share/php/Symfony/Component/Process/ExecutableFinder.php
/usr/share/php/Symfony/Component/Process/Exception/
/usr/share/php/Symfony/Component/Process/Exception/ExceptionInterface.php
/usr/share/php/Symfony/Component/Process/Exception/InvalidArgumentException.php
/usr/share/php/Symfony/Component/Process/Exception/LogicException.php
/usr/share/php/Symfony/Component/Process/Exception/ProcessFailedException.php
/usr/share/php/Symfony/Component/Process/Exception/RuntimeException.php