run a php script in background

Question

I have a php scrip, in which i have written the following code

$client = new \Predis\Client();
$client->select(4);
$client->lpush('emailid',$x['to']);


$command = "/usr/bin/php5 -f /var/www/Symfony/src/Ens/NewBundle/Controller/cron.php";

exec( "$command > /dev/null &", $arrOutput );

return $this->render('EnsNewBundle:Email:header.html.twig');

in this I have written an another php script named as cron.php. I want to run that script in background. and I want to check that is this running in background or not. how can i check that

possible duplicate of php execute a background process

DhruvPathak
– DhruvPathak

2012-08-23 06:09:23 +00:00
Commented Aug 23, 2012 at 6:09 — DhruvPathak
– DhruvPathak, Commented Aug 23, 2012 at 6:09

Alexander · Accepted Answer · 2013-03-07 22:49:28Z

5

Maybe you could have a look to the Symfony2 Process component.

It's quite useful for running command from PHP.

edited Mar 7, 2013 at 22:49

Alexander

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answered Aug 23, 2012 at 11:11

user1041440

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Comments

amitchhajer · Accepted Answer · 2012-08-24 07:16:32Z

1

You can take the output of cron in a file by > filename and check if it really runs.

Or check in process list if there is a new php process stating when you run this one.

You should also look at Codememe bundle here

Do check open source queuing systems too, they are helpful many times. Like Beanstalkd or RabbitMQ

You can push data to these queues, they can be say "filenames" and other worker takes data from the "tubes" of queues and apply say "php filename" and then picks up next data from queue.

edited Aug 24, 2012 at 7:16

answered Aug 23, 2012 at 6:09

amitchhajer

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6 Comments

Rohitashv Singhal Over a year ago

when i m running on command line php test.php then it is giving correct answer but when i am running this command in another php file as follow: echo shell_exec('php test.php | /dev/null &'); then it is giving no answer

amitchhajer Over a year ago

when you do shell_exec the process starts in background, so take some standard output from test.php to a file using shell_exec('php test.php > file'); , you don't need '&' here. And check if test.php returned successfully using echoing something at file termination, which will be stored in file

Rohitashv Singhal Over a year ago

this is not giving any response

Rohitashv Singhal Over a year ago

when i am running whoami directly in this exec() then its giving correct ans but when i am execution this in test,php and executing test,php in index.php then it is giving blank

amitchhajer Over a year ago

is test.php made to do anything? try something like sexec("mkdir dir") in test.php and check whether it is running or not.

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