Question

我有一个个人项目，该项目使用Symfony的Process组件（利用php的proc_open（））运行带有多个PHP子进程的主进程。我还有一个Event类，其中listens的事件为triggered：

Event.php

class Event 
{
    private $events = [];

    public function listen($name, $callback) 
    {
        $this->events[$name][] = $callback;
    }

    public function trigger($name, $argument = null) 
    {
        foreach ($this->events[$name] as $event => $callback) 
        {
            if($argument && is_array($argument)) {

                call_user_func_array($callback, $argument);

            } elseif ($argument && !is_array($argument)) {

                call_user_func($callback, $argument);

            } else {

                call_user_func($callback);
            }
        }
    }
}

Parent.php

class Parent
{
    private $process;
    public $event;

    protected function __construct()
    {

        $this->event = new Event();

        $this->event->listen('customEvent', function(){
            echo 'A custom event was fired!'.PHP_EOL;
        });

        $this->process = new Process('php Child.php');
    }

    protected function run()
    {
        $this->process->start();

        while($this->process->isRunning()) {}
    }
}

Child.php

class Child
{
    public $event;

    protected function __construct()
    {
        $this->event = new Event();
    }

    protected function run()
    {
        while(true) {

            if($condition == true) {
                $this->event->trigger('customEvent');
            }
        }
    }
}

如果从父进程中调用$this->event->trigger('customEvent');方法，则会得到所需的结果（A custom event was fired!\n）。如何在子进程中调用trigger()方法，以便它可以触发在主进程中定义的回调函数（使用$this->event->listen()）？该应用程序将在Linux系统上运行。所有名称空间均已正确配置，没有粘贴它们以获得更好的可读性。

从proc_open（）子流程中调用主流程方法

0 个答案: