/usr/share/php7.0-pgsql/pgsql/pgsql.ini is in php7.0-pgsql 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 3 | ; configuration for php pgsql module
; priority=20
extension=pgsql.so
|