(PHP 5 >= 5.6.0)
pg_connect_poll — Poll the status of an in-progress asynchronous PostgreSQL connection attempt.
$connection
] )
pg_connect_poll() polls the status of a PostgreSQL
connection created by calling pg_connect() with the
PGSQL_CONNECT_ASYNC option.
connectionPostgreSQL database connection resource.
Returns PGSQL_POLLING_FAILED,
PGSQL_POLLING_READING,
PGSQL_POLLING_WRITING,
PGSQL_POLLING_OK, or
PGSQL_POLLING_ACTIVE.