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Take a look at PHP multi-process processing tasks

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Release： 2023-04-09 15:44:01

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Take a look at PHP multi-process processing tasks

`pcntl` Module (non-Unix systems do not support this module)

A simple example of PHP multi-process probably looks like this:

// 5 个子进程处理任务for ($i = 0; $i < 5; $i++) {
    $pid = pcntl_fork();    if ($pid == -1) {        die("could not fork");
    } elseif ($pid) {        echo "I&#39;m the Parent $i\n";
    } else { // 子进程处理
        echo "I&#39;m the Child $i\n";        // 业务处理
        exit($i); // 一定要注意退出子进程，否则 pcntl_fork() 会被子进程再 fork，带来处理上的影响。
    }
}// 等待子进程执行结束while (pcntl_waitpid(0, $status) != -1) {
    $status = pcntl_wexitstatus($status);    echo "Child $status completed\n";
}复制代码

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Of course, in actual applications, we cannot output code like this. It is not robust enough and elegant enough, so I found an extension package based on pcntl encapsulation to use.

spatie/async - An extension package based on `pcntl`

The following is an example of how I use spatie/async to optimize a multi-process request

Original code (takes about 20s) - github.com/guanguans/m…

/**
 * @param string $keyword
 *
 * @return array
 */public function searchAll(string $keyword): array{
    $songAll = [];    foreach ($this->platforms as $platform) {
        $songAll = array_merge($songAll, $this->search($platform, $keyword));
    }    return $songAll;
}/**
 * @param string $platform
 * @param string $keyword
 *
 * @return mixed
 */public function search(string $platform, string $keyword){
    $meting = $this->getMeting($platform);

    $songs = json_decode($meting->format()->search($keyword), true);    foreach ($songs as $key => &$song) {
        $detail = json_decode($meting->format()->url($song[&#39;url_id&#39;]), true);        if (empty($detail[&#39;url&#39;])) {            unset($songs[$key]);
        }
        $song = array_merge($song, $detail);
    }    unset($song);    return $songs;
}复制代码

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After improvement (takes about 4s) - github.com /guanguans/m…

/**
 * @param string $keyword
 *
 * @return array
 */public function searchAll(string $keyword): array{
    $songAll = [];
    $pool = Pool::create();    foreach ($this->platforms as $platform) {
        $pool->add(function () use ($platform, $keyword) {            return $this->search($platform, $keyword);
        }, $this->getSerializedOutput())->then(function ($output) use (&$songAll) {
            $songAll = array_merge($songAll, $output);
        })->catch(function (\Throwable $exception) {            exit($exception->getMessage());
        });
    }
    $pool->wait();    return $songAll;
}/**
 * @return mixed
 */public function search(string $platform, string $keyword){
    $meting = $this->getMeting($platform);
    $songs = json_decode($meting->format()->search($keyword), true);

    $pool = Pool::create();    foreach ($songs as $key => &$song) {
        $pool->add(function () use ($meting, $song) {            return json_decode($meting->format()->url($song[&#39;url_id&#39;]), true);
        })->then(function ($output) use (&$songs, &$song, $key) {
            $song = array_merge($song, $output);            if (empty($song[&#39;url&#39;])) {                unset($songs[$key]);
            }
        })->catch(function (\Throwable $exception) {            exit($exception->getMessage());
        });
    }    unset($song);
    $pool->wait();    return $songs;
}复制代码

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