php5-pgsql 5.6.4+dfsg-4ubuntu4 (amd64 binary) in ubuntu vivid

 This package provides a module for PostgreSQL database connections
 directly from PHP scripts. It also includes the pdo_pgsql module for
 use with the PHP Data Object extension.
 .
 PHP (recursive acronym for PHP: Hypertext Preprocessor) is a widely-used
 open source general-purpose scripting language that is especially suited
 for web development and can be embedded into HTML.