plphp crashing server

Uh oh, I think plphp is crashing the server. When I
update a row in the table with the trigger, this
happens:

server closed the connection unexpectedly
This probably means the server terminated abnormally
before or while processing the request.
The connection to the server was lost. Attempting
reset: Failed.

And this is what shows up in the log:

LOG: server process (PID 31665) was terminated by
signal 11
LOG: terminating any other active server processes

Wow. I still don't see anything wrong with the plphp
function - how could it cause the entire server to
crash?

Thanks,
CSN

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