commandline php

[richie]

I have a php script that runs for about 30 minutes.

I'm calling the script every minute from the command line using cron.

Question: Can I have multiple instances of the same script running concurrently without one interfering with the other?

What I want to do is to be able to run a new instance each minute, and not have the new instance interfere with currently running processes.

For example, if one process generates a random password $password, would that value be affected if another process generates it's own $password?

TIA.

[johanafm]

Yes you can.

Do you? Not so certain.

Each script operates on its own with no awareness of the other scripts, so unless you start using memory which is accessible by all scripts you have no problems. E.g. file operations could mean trouble.

[dagon]

think about any standard web site, hundreds of people are browsing it at one time, many accessing the same file(s) at the same time. Things would fall apart fast if what one person did effected the others.

[richie]

Thanks for your responses.

I know I could just test it out, but the test bed is very complex, and I won't even know for sure if any errors I'm getting are due to such obscure problem.