(PECL pthreads >= 2.0.0)
Pool::collect — Collect references to completed tasks
public Pool::collect ([ Callable $collector ] ) : int
Allows the pool to collect references determined to be garbage by the optionally given collector.
collector
A Callable collector that returns a boolean on whether the task can be collected or not. Only in rare cases should a custom collector need to be used.
The number of remaining tasks in the pool to be collected.
| Version | Description |
|---|---|
| v3 | An integer is now returned, and the collector parameter is now optional. |
Example #1 A basic example of Pool::collect()
<?php
$pool = new Pool(4);
for ($i = 0; $i < 15; ++$i) {
$pool->submit(new class extends Threaded {});
}
while ($pool->collect()); // blocks until all tasks have finished executing
$pool->shutdown();
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https://www.php.net/manual/en/pool.collect.php