<?php
Swoole\Coroutine::getPcid(int $cid = 0)
Coroutine ID. By default, getting the parent coroutine ID of the current coroutine.
Coroutine ID.
Get the parent coroutine ID of a coroutine by coroutine ID.
<?php
Co\run(function () {
echo Swoole\Coroutine::getPcid();
});