https://bitbucket.org/mike_php_net/ext-pq/wiki/AsyncOperations
* Extended type support by pg_type:
https://bitbucket.org/mike_php_net/ext-pq/wiki/UsingTypes
https://bitbucket.org/mike_php_net/ext-pq/wiki/AsyncOperations
* Extended type support by pg_type:
https://bitbucket.org/mike_php_net/ext-pq/wiki/UsingTypes