Awaitable version of stream_select()
function stream_await( resource $fp, int $events, float $timeout = 0.0, ): Awaitable<int>;
resource $fp- Stream resource, must be backed by a file descriptor such as a normal file, socket, tempfile, or stdio. Does not work with memory streams or user streams.
int $events- Mix of STREAM_AWAIT_READ and/or STREAM_AWAIT_WRITE
float $timeout = 0.0- Timeout in seconds
int- - Result code STREAM_AWAIT_CLOSED: Stream is closed STREAM_AWAIT_READY: Activity on the provided stream STREAM_AWAIT_TIMEOUT: No activity (timeout occured) STREAM_AWAIT_ERROR: Error