Stopping infinit loop from php script run in linux terminal

Question

I am currently following a tutorial that teaches how to create a queue in php. An infinite loop was created in a php script. I simplified the code in order to focus on the question at hand:

while(1) {
        echo 'no jobs to do - waiting...', PHP_EOL;
        sleep(10);  
}

I use PuTTy (with an SSH connection) to connect to the linux terminal in my shared hosting account (godaddy). If I run php queuefile.php, I know it will run with no problems (already tested the code with a finite for loop instead of the infinite while loop).

QUESTION: How could I exit out of the infinite loop once it has started? I have already read online the option of creating code that "checks" if it should continue looping with something like the following code:

$bool = TRUE; 
while ($bool)
{
  if(!file_exists(allow.txt)){$bool = FALSE}
  //... the rest of the code

though I am curious if there might be a command I can type in the terminal, or a set of keys I can push that will cause the script to terminate. If there is any way of terminating the script, or if there is a better way to make the previous "check", I would love your feedback!

I used to run a chat server using sockets on a linux machine. You can use screen to host the application in a 'screen', if you want to quit, you could simply open up that screen and use control + c — Bert Bijn
– Bert Bijn, Commented May 15, 2016 at 17:57

Krzysztof Krasoń · Accepted Answer · 2016-05-15 17:58:13Z

2

Pushing Ctrl+C should stop the running program that is running in the foreground.

You could also kill it when you login in another session an do some ps aux | grep my-php-script.php and see if it is your program, then you can use pkill -f my-php-script.php to kill this process.

answered May 15, 2016 at 17:58

Krzysztof Krasoń

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2 Comments

Webeng Over a year ago

worked like a charm, thanks! oh and you mentioned if I log in with another session. If I already had something working in a background, would killing it be done like you said: pkill -f queuefile.php? or does that only work If I called the php script in the same session?

Krzysztof Krasoń Over a year ago

@Webeng It will work in another session, you just need to be on the same machine and that's all.

Javid Aliyev · Accepted Answer · 2016-05-15 18:01:15Z

0

I understand so that you want to make cron in your server. Therefore you should log in your server via putty and create cron job. For example: After logging...

crontab -e

Then add

1 2 3 4 5 /path/to/command arg1 arg2

answered May 15, 2016 at 18:01

Javid Aliyev

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