I'm also having this problem, but I was only able to get to this point by downloading the source and recompiling the phpsrvlt.jar myself because the jar in the binary distribution did not contain any *.class files!

latest php-4.2.1 
latest tomcat-4.1.7 
sun jvm 1.4.0 
After running any php script about 10 times, the whole 
tomcat server dies with output like the following.  All 
signals originatre from zend_hash.c from various functions 
including zend_hash_rehash() and 
zend_hash_index_update_or_next_insert() 
 
 
An unexpected exception has been detected in native code 
outside the VM. 
Unexpected Signal : 11 occurred at PC=0x4CB77EEB 
Function=zend_hash_index_update_or_next_insert+0x2B 
Library=/usr/local/php-servlet/lib/php/libphp4.so 
 
Current Java thread: 
        at net.php.reflect.setResultFromObject(Native 
Method) 
        at net.php.reflect.setResult(reflect.java:105) 
        at net.php.servlet.readCookies(servlet.java:93) 
        at net.php.servlet.send(Native Method) 
        at net.php.servlet.service(servlet.java:188) 
        at net.php.servlet.service(servlet.java:212) 
        at 
javax.servlet.http.HttpServlet.service(HttpServlet.java:853) 
...

Compiling with --enable-debug and the CFLAG -g3 seems to 
make the servlet SAPI a lot more stable.  add 
--enable-debug to your configure script.  And export an 
environment variable CFLAGS before you configure. 
 
export CFLAGS ="-O3 -mcpu=i686 -march=i686 
-malign-functions=4  -pthread -g3 -Wall -DZTS -prefer-pic" 
 
Make sure that INLINE_CFLAGS is set to this in the 
Zend/Makefile and the TSRM/Makefile.  If not, just change 
them and remake.  You might have to remove libphp4.so and 
sapi/servlet/phpsrvlt.jar to make sure the recompile works 
properly.  Copy the phpsrvlt.jar back to your tomcat 
shared/lib/ folder and re run tomcat.  Now, every php page 
you hit you should see this on the command line: 
 
fopen_wrappers.c(656) :  Freeing 0x084E2DE8 (41 bytes), 
script=- 
servlet.c(334) :  Freeing 0x0822EF30 (4 bytes), script=- 
 
If you see this, you know you're good to go.  Hopefully 
the servlet SAPI will improve stability with ZE2.  I just 
got this working for more than 10 requests, so email me if 
you need any help.  Seems rock solid so far.

Thanks Mark!

I followed your instructions and its way better. No crasch yet. I am now able to run phpBB under Tomcat (with custom authorization using servlet filters).

Still, something tells me the bugs are still there, just not as easy to provoke...

PHP 4.2.1 + Tomcat 4.0.4 + Java 1.4.0 (Linux 2.4.7)

System config: Win2K, JDK 1.4, PHP 4.2.2, Tomcat 4

I *CAN* get PHP 4.0.6 to work as a servlet with the above config, but cannot get the latest release to work.  I compiled the phpsrvlt.jar myself with 4.2.2 and 4.0.6 and could only get 4.0.6 to work successfully.  

Is there anyone that *can* get 4.2.2 to work on Windows as a servlet?

Same error on linux,
seems there is a SEGMENTATION FAULT on all the hash code of zend....
Hope this will be debugged soon...

BTW.. it is not *so* visible on PHP as apache .so or cgi, but i think it will ALSO happens sometimes... except that not the whole apache die like tomcat, but just the thread... so you just get a "no server response" sometimes.....
and passes invisible really because or lack of zombs logs under apache

Please try using this CVS snapshot:

  http://snaps.php.net/php4-latest.tar.gz
 
For Windows:
 
  http://snaps.php.net/win32/php4-win32-latest.zip

No feedback was provided for this bug for over 2 weeks, so it is
being suspended automatically. If you are able to provide the
information that was originally requested, please do so and change
the status of the bug back to "Open".

I've tried with 
Updated Redhat 8.0
Apache Tomcat/4.1.12-LE-jdk14
J2sdk 1.4.1
php 4.2.3 , 4.2.2 and CVS versions up to 200211030600 and STABLE-200211030600 and have the same behavior:

 Runs fine but after some reloads causes a fatal error

An unexpected exception has been detected in native code outside the VM.
Unexpected Signal : 11 occurred at PC=0x4F36516A
Function=zend_hash_index_update_or_next_insert+0x3A
Library=/usr/local/lib/libphp4.so
...