Method

phasync::writable

Suspends the coroutine until the stream can be written without blocking, and returns the stream.

Description#

public static phasync::writable(
    mixed $resource,
    float $timeout = PHP_FLOAT_MAX
): mixed

As phasync::readable does for reading. One coroutine at a time may wait to write to a stream, while another waits to read from it.

$resource, for use in the call that writes it mixed

Exception	When
`IOException`	If `$resource` is not an open stream, or is closed while waiting
`LogicException`	If another coroutine is waiting to write to `$resource`
`TimeoutException`	If the stream is not writable in time

Example 1

stream_set_blocking($socket, false);
$written = fwrite(phasync::writable($socket), $data);   // may write less than all of $data