PHP - run script in background

Question

I have to execute a php script (test.php) in the background. I tried this but it's not working:

<?
$cmd = "php /home/megad404/www/prove/test.php &> /dev/null &";
exec('/bin/bash -c "'.$cmd.'"',$output,$return);
if($return===0)
{
    echo 'Successful';
} 
else
{
    echo 'Unsuccessful';
}
?>

It returns "Successful" but it doesn't execute test.php

test.php:

<?
file_put_contents(date("s"),"");
sleep(5);
file_put_contents(date("s"),"");
sleep(5);
file_put_contents(date("s"),"");
?>

test.php writes a file every 5 second and it works fine, except if I try to execute it in the background with the first script.

Could it be a server issue? Is there another way to run a script in the background?

Vladimir Cherepinskiy · Accepted Answer · 2013-04-17 12:56:31Z

2

Use shell_exec and nohup

shell_exec("nohup php /home/megad404/www/prove/test.php > /dev/null & echo $!");

answered Apr 17, 2013 at 12:56

Vladimir Cherepinskiy

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3 Comments

Vladimir Cherepinskiy Over a year ago

Open console and write command php /home/megad404/www/prove/test.php. See result or error exception. I hope you use *nix OS and you had set the environment variable php

Alessandro Tedesco Over a year ago

How do I open the console?

Alessandro Tedesco Over a year ago

Sorry for my ignorance, but, how I know that? I think that my problem is related to permission. I just set all to 777 but now i can't connect to the server to see if it works

Winter · Accepted Answer · 2019-01-08 09:42:19Z

0

Use shell_exec and give absolute path for php:

$output = shell_exec("nohup /usr/bin/php7.0 -f /home/megad404/www/prove/test.php &> /dev/null &");

Just confirm the absolute path for php in your server. For instance, I'm using php 7.0 and the absolute path is /usr/bin/php7.0

Also, give executable permission to the php file you are running from your code.

chmod +x /home/megad404/www/prove/test.php

answered Jan 8, 2019 at 9:42

Winter

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