There were only two uses of non-zmm allocation functions left,
which really did not need to use the system allocator. Remove
them, and remove the system allocator based APIs.
This is a larger overhaul of the mysqlnd result set infrastructure:
* Drop support for two different types of buffered results sets
("c" and "zval"). Possibly these made sense at some earlier
time, but now (with minor adjustments) one option is strictly
worse than the other. Buffered result sets already buffer the
full row packets, from which zvals can be decoded. The "zval"
style additionally also buffered the decoded zvals. As result
sets, even buffered ones, are generally only traversed once,
this just ends up wasting memory. Now, a potentially useful
variation here would be to buffer the decoded zvals instead of
the row packets, but that's not what the code was doing.
* To make it really strictly better, pre-allocate the zval row
buffer and reuse it for all rows. Previously the "c" style always
allocated a new buffer for each row.
* The fetch_row API now provides a populated zval[]. The task of
populating an array is deferred to fetch_row_into, which also
avoids duplicating this code in multiple places. The fetch_row_c
API is also implemented on top of fetch_row now, rather than
duplicating large parts of the code.
* The row fetching code for prepared statements and normal result
sets has been mostly merged. These already used the same
infrastructure, but prepared statements used separate row
fetching functions that were nearly the same as the normal ones.
This requires passing the stmt into the result set, rather than
just a flag. The only part that remains separate is reading of
unbuffered results in the presence of PS cursors.
This patch follows previous license year ranges updates. With new
approach source code files now have simplified headers with license
information without year ranges.
This patch removes the so called local variables defined per
file basis for certain editors to properly show tab width, and
similar settings. These are mainly used by Vim and Emacs editors
yet with recent changes the once working definitions don't work
anymore in Vim without custom plugins or additional configuration.
Neither are these settings synced across the PHP code base.
A simpler and better approach is EditorConfig and fixing code
using some code style fixing tools in the future instead.
This patch also removes the so called modelines for Vim. Modelines
allow Vim editor specifically to set some editor configuration such as
syntax highlighting, indentation style and tab width to be set in the
first line or the last 5 lines per file basis. Since the php test
files have syntax highlighting already set in most editors properly and
EditorConfig takes care of the indentation settings, this patch removes
these as well for the Vim 6.0 and newer versions.
With the removal of local variables for certain editors such as
Emacs and Vim, the footer is also probably not needed anymore when
creating extensions using ext_skel.php script.
Additionally, Vim modelines for setting php syntax and some editor
settings has been removed from some *.phpt files. All these are
mostly not relevant for phpt files neither work properly in the
middle of the file.
So we can use it there as well...
For now I've retained the zend_smart_str_public.h header, though
it would probably be better to just move that one struct into
zend_types.h.
implies more memory copy. The old method is still available and can be used.
It stays as default. Choosing the method is through a flag to mysqli_query()/mysqli_real_query()
New mode can be forced with an INI setting, for all extensions that support this mode
(ext/mysql and mysqli, because PDO due to it's architecture can't support it)
The setting is mysqlnd.fetch_data_copy=[0|1]
