Run a script in background in php using shell_exec

Question

I was running a php script in background, and what I tried:

shell_exec('nohup php C:\wamp\www\Management_software\application\views\testcron.php  > /dev/null & echo $!');

This is working fine when I opened up the command prompt(cmd) and tried:

php C:\wamp\www\Management_software\application\views\testcron.php

But this is not working from the php page, how to solve this or any other techniques or what are the modifications I have to make ?

Nope am getting nothing in my php page , But in cmd am getting the output — KTM
– KTM, Commented Dec 30, 2013 at 7:52

Community · Accepted Answer · 2023-11-17 19:52:31Z

2

This might help you debug the problem. exec can take 3 arguments and those help in identifying what's going on.

Try with

exec('nohup php C:\wamp\www\Management_software\application\views\testcron.php  > /dev/null & echo $!', $op, $er); 
echo $er;`

and see what gets printed on the page. If the value of $er is greater than 0, then something is wrong.

For list of exit codes, refer this list

edited Nov 17, 2023 at 19:52

CommunityBot

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answered Dec 30, 2013 at 7:56

asprin

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5 Comments

KTM Over a year ago

The value of $er is 0

asprin Over a year ago

That means the command executed successfully. Whatever was written in testcron.php was completed. So if it had, for example say, an insertion into the database you could verify it by looking it up in the table.

KTM Over a year ago

Yeah i have an insert command ,But its not working actually .

KTM Over a year ago

Well i have to add anything in php.ini , inorder to work , 'exec' and 'shell_exec' functions ?

KTM Over a year ago

Well It worked , there was no writing permission on the file !

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