Application is closed but still running in task manager

closed application
then i tried to open again
but it was not opening
so searched and i found my application was running in task manager
i ended task from task manager
then it was working fine

but every time we close application
the application still runs in task manager

Maybe a PHP process remains because you have a script that does not end?

not possible
because person opens software then closes and it remains open in task manager
nothing remains
made sure of it

Yes, but maybe one of your PHP scripts of your app does not end. It’s difficult to tell without testing your app.