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4.x is outdated, please check the latest version 22.x
Latest version:
pecl install openswoole-22.1.2
<?php Swoole\Coroutine\Channel->close(): bool
A bool will be returned, true for a successful close.
Close the channel and resume other Coroutines.
<?php
Co\run(function() {
$data = 'Hello World!';
$chan = new chan(1);
$chan->push($data);
$pop = $chan->pop();
var_dump($pop);
$chan->close();
});
By closing a channel it will wake up all the suspended coroutines, any push() calls will return false and so will any pop() calls.
Waking up all the coroutines waiting to read and write to the channel.