Getting script exit status code in php

Question

Is there anyway to get the exit status code for a php script run in the background via exec($cmd, $output, $exitCode)?

For example:

exec('php script.php &', $output, $exitCode);

If the trailing '&' isn't included then $exitCode works as expected, it's always 0 otherwise.

Please refer this link stackoverflow.com/questions/1533675/… — Pradeep Singh
– Pradeep Singh, Commented Dec 30, 2010 at 17:58
not positive, but i think if it is running in the background, then your code moves on before the called script finishes execution, so there is no way to get the returned status code. — dqhendricks
– dqhendricks, Commented Dec 30, 2010 at 17:59
The '0' you get probably means that the process was successfully sent to background. — Álvaro González
– Álvaro González, Commented Dec 30, 2010 at 17:59

Parris Varney · Accepted Answer · 2013-02-07 14:57:31Z

6

For anybody that finds themselves here, my solution was to make a php script that takes a script as an argument. The new script is called to the background and handles exit statuses appropriately.

For example:

$cmd = 'php asynchronous_script.php -p 1';
exec("php script_executor.php -c'$cmd' &");

The second script looks something like

$opts = getOpt('c:');
$cmd = rtrim($opts['c'], '&');
$exitCode = 0;
$output = '';

exec($cmd, $output, $exitCode);

if ($exitCode > 0) {
 ...
}

edited Feb 7, 2013 at 14:57

answered Dec 30, 2010 at 21:25

Parris Varney

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3 Comments

Khez Over a year ago

Aren't you removing & in the second script? Meaning you are not running a background process in either case? You probably meant to run the first script in the background... probably.

Parris Varney Over a year ago

@Khez It's been a while since I posted this, but I think you're right, the original solution had a hard coded & in the first exec() call, and removed it from the second so it could deal with the exit codes.

Khez Over a year ago

no worry, was searching for something similar (unrelated to background processes), read the accepted answer and felt the need to point out possible issues...

Kyle · Accepted Answer · 2010-12-30 18:00:08Z

5

I found something that is probably quite equivalent to Pradeep's solution. Someone posted about this on the function's documentation page. http://www.php.net/manual/en/function.exec.php#101506

answered Dec 30, 2010 at 18:00

Kyle

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