/usr/share/php/PHP/Compat/Environment/ is in php-compat 1.6.0a3-2build1.
This file is owned by root:root, with mode 0o755.
..
/usr/share/php/PHP/Compat/Environment/_magic_quotes_inputs.php
/usr/share/php/PHP/Compat/Environment/magic_quotes_gpc_off.php
/usr/share/php/PHP/Compat/Environment/magic_quotes_gpc_on.php
/usr/share/php/PHP/Compat/Environment/magic_quotes_sybase_off.php
/usr/share/php/PHP/Compat/Environment/magic_quotes_sybase_on.php
/usr/share/php/PHP/Compat/Environment/register_argc_argv_off.php
/usr/share/php/PHP/Compat/Environment/register_globals_off.php
/usr/share/php/PHP/Compat/Environment/register_globals_on.php
/usr/share/php/PHP/Compat/Environment/register_long_arrays_off.php
/usr/share/php/PHP/Compat/Environment/register_long_arrays_on.php
/usr/share/php/PHP/Compat/Environment/request_uri.php