如何在静默模式下执行脚本以摆脱浏览器挂起 [英] How to execute script in silent mode to get rid from browser hang on

问题描述

使用下面的代码，我试图在后台运行脚本。但是当在浏览器中点击网址，然后浏览器正在等待是完成，并在此成功消息之后。
我不想挂在浏览器上，不想等待它的完成。

有没有想要我可以获得进程ID（Linux PID）作为过程启动时的输出。
我们可以说根据需要我想创建过程与Cron作业相同。但我不想设置一个Cron工作。因为我有1000个用户，每个用户想要按需爬行。

我的上一个问题与此相关。

解决方案

您可以创建一个每分钟运行的cronjob。一旦您提交表单，您就可以将文件粘贴到网站上的某个目录。

让cronjob检查文件是否每分钟都有，如果文件是通过shell脚本执行一个php脚本（默认如你所说），并删除文件。

With below code i am trying to run script in background. but when hit url in browser then browser is waiting is completion and after this success message is coming. I do not want to hang on browser and do not want to wait for its complete.

Is there any want i can get Process ID (Linux PID) as output when process start. We can say on demand i want to create Process same as Cron job does. but i do not want to setup a Cron job. Because i have 1000 users and each user want to do crawl on demand.

My prev question which is related to this.

How to create background process in PHP

Code on PasteBin: http://pastebin.com/6FkS9ZYx

component:

/
 * @component to write sample script which will pass to backend jobs 
 *
 */

App::uses('Component', 'Controller');
class BackgroundScriptComponent extends Component {

    public function crawllUrls($crawling) {   // Passing 500 urls to crawl

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

            /*
                Internal code which is running perfect using browser hit
            */

        }
    }
}

/* @component to write sample script which will pass to backend jobs */

Controller:

class ScriptController extends AppController {

    public $components = array('BackgroundScript');

    public function CreateBackendProcess() {
        $this->layout = false;
        $this->autoRender = false;

        $arrOfUrls = array('500 url there in this array');

        //echo $this->BackgroundScript->crawllUrls($crawling);  // This line having Component method call. I do not want to call this as same as.. It should call from CLI

        $cmd = "";    //what should come in this $cmd to calls BackgroundScript's crawllUrls() method component which will pass to exec() 

        exec($cmd, $pid);

        echo "<br />Script Running with process id " . json_encode($pid); //I will save this PS ID to database
        exit;
    }
}

解决方案

You can create a cronjob which runs every minute. As soon as you submit the form you paste a file to some directory on your website.

Let the cronjob check if the file is there every minute, If the file is there execute a php script (silently as you say) through a shell script, and remove the file.

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