I'd like to have some functionality that helps to determine if a script is terminated normally or due to time out error and/or memory limit exceeded error.

There are two global flags, PG(connection_status) and AG(memory_exhausted), which supposedly would indicate such errors. However, they are not set properly. PG(connection_status) remains as PHP_CONNECTION_NORMAL when time out happens. AG(memory_exhausted) is always 0, never changes.

I'm writing a new PHP extension and I need to generate an alert when a script is terminated due to errors. The changes I need are very minor, actually I can pinpoint the changes in the PHP source:

1) in Zend/zend_execute_API.c, function zend_timeout(), uncomment the following line:

 /* is there any point in this?  we're terminating the request anyway...
 PG(connection_status) |= PHP_CONNECTION_TIMEOUT;  */

2) in Zend/zend_alloc.c, _CHECK_MEMORY_LIMIT macro, line 
  AG(memory_exhausted=1; 
 should be put before "zend_error(...)", because zend_error(...) never returns in case of fatal errors.