Check if a Python job is running using PHP -

i've got python script thats called twice day via cron job trigger alarm runs in loop, , terminated pressing physical button , calling destroy function when button pressed.

so far good.

now, i'd check via php if script running - before button pressed after it's called via cron.

how can this?

based on question - i've tried following:

exec("jobs", $pids); if(!empty($pids)) {     print_r($pids); } 

but doesn't seem returning value. calling jobs terminal works expected , lists job running when invoking script directly using python3 alarm.py &.

using exec("ps -a | grep -i $processname | grep -v grep", $pids); feel won't work since process id can change , can not known until script running.

use pgrep this:

pgrep -f 'python scriptname.py ...' 

-f can used specify full command line of python process avoid collision multiple python processes running in parallel.