I'm debugging in PhpStorm remotely over SSH. It stopped to my breakpoint and I see the stack trace. The problem is that it's very big.
I would like to copy or export it into a text file to examine closely. In PhpStorm after the PHP script times out the debugging session is closed and I lose the trace.
AFAIK it's not possible in PhpStorm.
The best ticket I could find is https://youtrack.jetbrains.com/issue/IDEA-153569 (also has duplicate IDEA-166237).
Watch that ticket (star/vote/comment) to get notified on any progress.
Right now I may only suggest to use PHP's own debug_print_backtrace()
function or alike (and save its output into a file) or more powerful PsySH.