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25.x is outdated, please check the latest version 26.x
Latest version:
pecl install openswoole-26.2.0
<?php OpenSwoole\Coroutine::defer(callable $callback): void
Closure function to be deferred.
Execute the deferred function to be executed at the time when the current coroutine is exiting.
<?php
function task() {
echo '3' . PHP_EOL;
}
co::run(function () {
go(function () {
echo '1' . PHP_EOL;
OpenSwoole\Coroutine::defer('task');
echo '2' . PHP_EOL;
});
});