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This option determines if the watcher will keep the run() loop
from returning. By default all watchers set "keep_alive" => true.
Setting this value to false is ideal for registering non-crucial
watchers (e.g. cache invalidation timers) that should run for the
life of the program but shouldn't prevent the event loop from
returning if all essential tasks have completed.
<?php
echo "before run\n";
run(function () {
immediately(function () {
echo "immediately\n";
});
once(function () {
echo "once\n";
}, 100, ["keep_alive" => false]);
repeat(function () {
echo "repeat\n";
}, 500, ["keep_alive" => false]);
echo "onStart end\n";
});
echo "after run\n";
The above snippet will have the following output:
before run
immediately
after run
The Amp\info() function now also reports the number of
keep_alive watchers currently registered via the "keep_alive" key.
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|---|---|---|
| .. | ||
| CoroutineResult.php | ||
| CoroutineState.php | ||
| Deferred.php | ||
| EvReactor.php | ||
| Failure.php | ||
| functions.php | ||
| LibeventReactor.php | ||
| NativeReactor.php | ||
| Pause.php | ||
| Placeholder.php | ||
| PrivatePlaceholder.php | ||
| PrivatePromisor.php | ||
| Promise.php | ||
| Promisor.php | ||
| PublicPromisor.php | ||
| Reactor.php | ||
| Struct.php | ||
| Success.php | ||
| UvReactor.php | ||
| Watcher.php | ||