For Clang, we just need to define the respective macros, since these
built-ins are available in all supported Clang versions (>= 4.0.0,
currently)[1].
For MSVC (and possibly other compilers) we use the respective APIs of
intsafe.h[2] which are available as of Windows 7/Server 2008 R2.
This avoids the UB due to signed integer overflow that may happen with
our fallback implementations.
We also drop the superfluous SHORT_MAX definition from pdo_firebird.
This shouldn't be defined unconditionally, but since it is apparently
unused, we remove it altogether.
[1] <https://releases.llvm.org/4.0.0/tools/clang/docs/LanguageExtensions.html>
[2] <https://learn.microsoft.com/en-us/windows/win32/api/intsafe/>
The respective code had been introduced 20 years ago, and we can assume
that the function is available at least of Firebird 3.0, what we
require anyway.
A common convention is to name internal C header files as `*_int.h`.
Since a couple of these are actually installed, we add comments that
this is not supposed to happen, (a) to avoid installing further
internal headers, and (b) to pave the way to fix this in the next major
PHP version.
Somewhat special is php_gmp_int.h, where "int" is meant as abbreviation
for "interface".
Another common convention is appending `_priv` or `_private`, but since
there have not been any issues regarding these headers so far, we
refrain from adding respective comments to these headers.
Anyhow, it might be a good idea to introduce some common naming
convention for such internal/private headers.
take2 of #12657
## About Firebird transaction
Firebird is a full transactional database, so the DB itself does not support autocommit mode. (Strictly, there is an autocommit mode, but it is a different concept from the "autocommit" that we are used to with MySQL and others.)
Therefore, a transaction must have started before any operation is performed, and autocommit mode had to be emulated in PHP.
I made sure that a transaction always exists when in autocommit mode. Since the `in_transacntion` function does not work as expected, I have introduced `H->in_manually_txn` to determine whether a transaction is being manually manipulated.
## There are two types of commit/rollback
(I'm not talking about two-phase commit. This change does not take into account two-phase commit.)
There are `isc_commit_retaining` which starts a transaction again in the same context immediately after committing, and `isc_commit_transaction` which closes the transaction as is.
Similarly, there are two types of rollback.
-----------
Due to the default value of the transaction isolation level, autocommit mode may obtain unintended results.
Regarding this, it would be too large to include support for transaction isolation levels in this PR, so I will leave it as is for now.
1. Update: http://www.php.net/license/3_01.txt to https, as there is anyway server header "Location:" to https.
2. Update few license 3.0 to 3.01 as 3.0 states "php 5.1.1, 4.1.1, and earlier".
3. In some license comments is "at through the world-wide-web" while most is without "at", so deleted.
4. fixed indentation in some files before |
Instead of requiring the type to be determined in advance by the
describer function and then requiring get_col to return a buffer
of appropriate type, allow get_col to return an arbitrary zval.
See UPGRADING.INTERNALS for a more detailed description of the
change.
This makes the result fetching simpler, more efficient and more
flexible. The general possibility already existed via the special
PDO_PARAM_ZVAL type, but the usage was very inconvenient and/or
inefficient. Now it's possible to easily implement behavior like
"return int if it fits, otherwise string" and to avoid any kind
of complex management of temporary buffers.
This also fixes bug #40913 (our second highest voted bug of all
time, for some reason). PARAM_LOB result bindings will now
consistently return a stream resource, independently of the used
database driver.
I've tried my best to update all PDO drivers for this change, but
some of the changes may be broken, as I cannot test or even build
some of these drivers (in particular PDO dblib and PDO oci).
Fixes are appreciated -- a working CI setup would be even more
appreciated ;)
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.
