- Extensions which delete global variables need to use new special function
- delete_global_variable() (I'm about to rename it) to remove them.
- Will post to internals@ or via commit messages if there's anything else.
used to return "" and not bool(false). It's not worth keeping it because
STR_FREE() and zval_dtor() always have to check for it and it slows down
the general case. In addition, it seems that empty_string has been abused
quite a lot, and was used not only for setting zval's but generally in
PHP code instead of "", which wasn't the intention. Last but not least,
nuking empty_string should improve stability as I doubt every place
correctly checked if they are not mistakenly erealloc()'ing it or
calling efree() on it.
NOTE: Some code is probably broken. Each extension maintainer should
check and see that my changes are OK. Also, I haven't had time to touch
PECL yet. Will try and do it tomorrow.
Merge from branch with one main difference: the default save_path is
set to the empty string on all platforms, whereas the code in the
branch only does so for win32.
# ALLOC_INIT_ZVAL() initialises the type field to IS_NULL, while
# MAKE_STD_ZVAL() doesn't. This caused a kind of random crash
# when zval_ptr_dtor() was applied on an intact zval created by
# the latter method.
#
# Please check relevant bugs again. There should be some that
# have already been marked as bogus.
Note: You should not be using ZVAL_DELREF() in day to day usage. Instead,
you should use zval_ptr_dtor(). Use ZVAL_DELREF() only if you're
messing with the refcount directly and know what you're doing.
Note #2: For clarity, if you want to initialize a new zval with a refcount
of 0, it's best to do that directly, instead of using ZVAL_DELREF
after allocating the zval...
