swoole执行外部程序称为进程

<?php

$child = new \Swoole\Process(function(\Swoole\Process $process){
    $process->exec('/usr/local/php/bin/php', ['/phpwww/swoole/mysql.php']);
});

$child->start();

$child->wait();

　　

<?php

while(true){
    sleep(1);
    echo "hello".PHP_EOL;
}