gistfile1.txt

which pg_config
/usr/local/bin/pg_config

/usr/local/bin/pg_config --includedir
/usr/local/Cellar/postgresql-9.3/9.3.4/include

brew install php55 --with-pgsql --verbose
==> Downloading http://www.php.net/get/php-5.5.14.tar.bz2/from/this/mirror
Already downloaded: /Library/Caches/Homebrew/php55-5.5.14
==> Verifying php55-5.5.14 checksum
tar xf /Library/Caches/Homebrew/php55-5.5.14
Warning: Backing up all known pear.conf and .pearrc files
Warning: If you have a pre-existing pear install outside
         of homebrew-php, or you are using a non-standard
         pear.conf location, installation may fail.
Error: No such file or directory - pg_config