php swoole thread,php swoole多进程/多线程用法示例【基于php7nts版】

swoole的多线程其实就是多进程，进程创建太多切换的开销很大，如果能用上pthreads建议用pthreads，因为我用的是php7nts版本没办法用pthreads

swoole实例如下：

$worker_num = 6; // 默认进程数

$workers = []; // 进程保存

$redirect_stdout = false; // 重定向输出 ; 这个参数用途等会我们看效果

for($i = 0; $i < $worker_num; $i++){

$process = new swoole_process('callback_function', $redirect_stdout);

// 启用消息队列 int $msgkey = 0, int $mode = 2

$process->useQueue(0, 2);

$pid = $process->start();

// 管道写入内容

$process->write('index:'.$i);

$process->push('进程的消息队列内容');

// 将每一个进程的句柄存起来

$workers[$pid] = $process;

}

function callback_function(swoole_process $worker)

{

$recv = $worker->pop();

echo "子输出主内容: {$recv}".PHP_EOL;

//get guandao content

$recv = $worker->read();

$result = doTask();

echo PHP_EOL.$result.'==='.$worker->pid.'==='.$recv;

$worker->exit(0);

}

while(1){

$ret = swoole_process::wait();

if ($ret){// $ret 是个数组 code是进程退出状态码，

$pid = $ret['pid'];

echo PHP_EOL."Worker Exit, PID=" . $pid . PHP_EOL;

}else{

break;

}

}

function doTask()

{

sleep(2);

return true;

}