/usr/ is in php-horde-http 2.1.1-4.
This file is owned by root:root, with mode 0o755.
..
/usr/share/
/usr/share/php/
/usr/share/php/.registry/
/usr/share/php/.registry/.channel.pear.horde.org/
/usr/share/php/.registry/.channel.pear.horde.org/horde_http.reg
/usr/share/php/Horde/
/usr/share/php/Horde/Http.php
/usr/share/php/Horde/Http/
/usr/share/php/Horde/Http/Exception.php
/usr/share/php/Horde/Http/Client.php
/usr/share/php/Horde/Http/Response/
/usr/share/php/Horde/Http/Response/Peclhttp2.php
/usr/share/php/Horde/Http/Response/Curl.php
/usr/share/php/Horde/Http/Response/Base.php
/usr/share/php/Horde/Http/Response/Peclhttp.php
/usr/share/php/Horde/Http/Response/Mock.php
/usr/share/php/Horde/Http/Response/Fopen.php
/usr/share/php/Horde/Http/Request/
/usr/share/php/Horde/Http/Request/Peclhttp2.php
/usr/share/php/Horde/Http/Request/Curl.php
/usr/share/php/Horde/Http/Request/Base.php
/usr/share/php/Horde/Http/Request/Factory.php
/usr/share/php/Horde/Http/Request/PeclhttpBase.php
/usr/share/php/Horde/Http/Request/Peclhttp.php
/usr/share/php/Horde/Http/Request/Mock.php
/usr/share/php/Horde/Http/Request/Fopen.php
/usr/share/doc/
/usr/share/doc/php-horde-http/
/usr/share/doc/php-horde-http/changelog.Debian.gz
/usr/share/doc/php-horde-http/examples/
/usr/share/doc/php-horde-http/examples/get-example-dot-com.php
/usr/share/doc/php-horde-http/changelog.gz
/usr/share/doc/php-horde-http/package.xml.gz
/usr/share/doc/php-horde-http/copyright