Laravel 5.1 - Execute a PHP script in the Background

Question

I have a web application written using Laravel 5.1 that runs a script when a user requests a certain page or clicks a button. This should activate the script in the background. I have tried this using Jobs & queues.

Here is my code chunk: myjob.php

class myjob extends Job implements SelfHandling, ShouldQueue {
use InteractsWithQueue, SerializesModels;

/**
 * Create a new job instance.
 *
 * @return void
 */
public function __construct()
{
    //
}

/**
 * Execute the job.
 *
 * @return void
 */
public function handle()
{
    //
    set_time_limit(0);
    $this->writeJobLogs('Error', 'Start Execution');
    //Job Processing Code
    $this->writeJobLogs('Error', 'End Execution');
}
}

Controller.php

class ManageController extends Controller {
    public function testJob(){
        $this->dispatch(new myjob());
    }
}

Job Processing Code is expected to take at least 10 minutes to get executed. Now when I run the code it throws error after which is given below:

[Symfony\Component\Process\Exception\ProcessTimedOutException] The process ""C:\wamp\bin\php\php5.5.12\php.exe" "artisan" queue:work --queue="default" --delay=0 --memory=128 --sleep=3 --tries=0 --env="local"" exceeded the timeout of 60 seconds.

& Job Processing Code is expected to be executed multiple times simultaneously, respective to the user requests. So I have a doubt regarding that if queues will be working fine or I have any other better choice. If so, please suggest.

score 1 · Answer 1 · answered Mar 15 '16 at 13:23

1

The Laravel Queue does not run processes in the background, rather gives you the ability to defer execution until a later time. Your script is timing out because it is exceeding the max execution time specified in your php.ini.

answered Mar 15 '16 at 13:23

What would you suggest if I want to run process in background? – ba1ar Mar 15 '16 at 13:24
I believe the exec, or shell_exec, command(s) are what you want to use to execute PHP code in the background. See this: https://florian.ec/articles/running-background-processes-in-php/ – Mar 15 '16 at 13:26
Here is a SO post on the subject: http://stackoverflow.com/questions/45953/php-execute-a-background-process/45966#45966 – Mar 15 '16 at 13:27
Thank you for the quick response.. This posts show that they are using basic PHP exec & shell exec commands, Is there any other possible way for doing this in Laravel ? – ba1ar Mar 15 '16 at 13:32
1

Not that I know of, it's good old regular PHP to achieve this. – Mar 15 '16 at 13:34

score 0 · Answer 2 · answered Mar 15 '16 at 13:48

The first solution that springs to mind for me (may not be ideal for you) would be to set up the logging commands on seperate functions inside the controller, eg.

public function writeLog()
{
    // Do your logging here
}

and make AJAX calls to a route pointing at those functions, eg;

// Laravel Route
Route::get('ajaxDoStuff', 'FooController@writeLog');

// AJAX on Blade Template
$.ajax({
//all the usual stuff for an AJAX call
url: "/ajaxDoStuff"
});

That's how i'd do it anyway not sure if it's ideal for you?

Laravel 5.1 - Execute a PHP script in the Background

2 Answers2