Poll the status of an in-progress asynchronous PostgreSQL connection attempt

# pg_connect_poll

(PHP 5 >= 5.6.0, PHP 7, PHP 8)

pg_connect_poll — Poll the status of an in-progress asynchronous PostgreSQL connection attempt

### Description

pg_connect_poll(PgSql\Connection `$connection`): int

pg_connect_poll() polls the status of a PostgreSQL connection created by calling pg_connect() with the `PGSQL_CONNECT_ASYNC` option.

### Parameters

`connection`

  An PgSql\Connection instance.

### Return Values

Returns `PGSQL_POLLING_FAILED`, `PGSQL_POLLING_READING`, `PGSQL_POLLING_WRITING`, `PGSQL_POLLING_OK`, or `PGSQL_POLLING_ACTIVE`.

### Changelog

Version | Description
--- | ---
8.1.0 | The `connection` parameter expects an PgSql\Connection instance now; previously, a resource was expected.

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