php脚本使用多进程处理数据

<?php
ini_set('memory_limit', -1);
require dirname(__DIR__) . DIRECTORY_SEPARATOR . 'vendor' . DIRECTORY_SEPARATOR . 'autoload.php';


$arr = range(0, 1000000);

class TestRunnable implements JennerSimpleForkRunnable
{
    protected $data;

    public function __construct(array $data)
    {
        $this->data = $data;
        #$this->data[0] = 1;
    }

    /**
     * @return void
     */
    public function run()
    {
        sleep(10);
        echo getmypid() . ':done当前内存'.(memory_get_usage()/2014/1024).'M' . PHP_EOL;
    }
}


echo '当前内存'.(memory_get_usage()/1024/1024).'M'.PHP_EOL;

$pool = new JennerSimpleForkPool();
$pool->execute(new JennerSimpleForkProcess(new TestRunnable($arr)));
$pool->execute(new JennerSimpleForkProcess(new TestRunnable($arr)));
$pool->execute(new JennerSimpleForkProcess(new TestRunnable($arr)));

$pool->wait();

注意利用fork进程写时复制特性节省内存

15行代码注释时，

当前内存32.427764892578M
1545:done当前内存16.514655225919M
1546:done当前内存16.515000465492M
1547:done当前内存16.515151750248M

15行代码未注释时,

当前内存32.428451538086M
1536:done当前内存32.787138468222M
1537:done当前内存49.05961783143M
1538:done当前内存65.331903239821M