My RHEL (plain) server runs fine on php 4.3.4 but whenever i upgrade php i start getting segmentation errors in apache on some php files which causes the entire apache to freeze in error log there is:

[Thu Apr 15 18:39:49 2004] [notice] child pid 4520 exit signal Segmentation fault (11)

Whenever i downgrade back to php 4.3.4 it all works fine again, but i dont want to be stuck with this old version.

I have tried disable zend, makes no difference.

Can anyone help?

Which ver of Apache are you running?

apache 2.0.49
i have tried reinstalling apache too makes no difference

Tried reboot the server, now i get segfaults even in php 4.3.4.

I recompiled apache to not use the worker mpm.
I still get the segfaults in the error log but at least now it doesnt crash apache anymore.

if prefork worles and worker doesn't then it's your code that is the issue

For what it's worth I don't know anyone running worker on HIGH traffic PHP sites

using prefork just stops the segfault from taking the entire apache with it.

the segfaults still occur, the script is phpmyadmin.
also had it segfault on occasion on a script which uses sockets.
it has worked fine for ages until i upgraded php.