- Unicode support. (Andrei, Dmitry, et al)
- Dropped safe_mode support (Ilia, Andi)
- Dropped zend.ze1_compatibility_mode (Dmitry)
-- Dropped allow_call_time_pass_reference, the error is maden E_STRICT. (Dmitry)
+- Dropped allow_call_time_pass_reference, added E_STRICT error message. (Dmitry)
- Dropped register_long_arrays (Dmitry)
- Droped register_globals support (Pierre)
- session_register, session_unregister and session_is_registered removed they