ext/pdo: Fixed PDO::setAttribute() and PDO::getAttribute() (#12793)

Implement GH-12385: flush headers without body when calling flush()

Closes GH-12785.

Report fatal error if JIT cannot be enabled

Closes GH-12403

[ci skip] UPGRADING

[ci skip] NEWS and UPGRADING for mb_*trim

Revert incomplete PG pipeline addition

Closes GH-12735

Improve performance of mbfl_name2encoding() by using perfect hashing (#12707)

mbfl_name2encoding() uses a linear loop through the encodings, comparing
the name one by one, which is very

Improve performance of mbfl_name2encoding() by using perfect hashing (#12707)

mbfl_name2encoding() uses a linear loop through the encodings, comparing
the name one by one, which is very slow. For the benchmark [1] just
looking up the name takes about 50% of run-time.

By using perfect hashing instead, we no longer have to loop over the
list, and the number of string comparisons is reduced to just a single
one. The perfect hashing table is generated using GNU gperf and amended
manually to fit in with mbstring and manually changed to reduce the
cache size.

[1] https://github.com/php/php-src/issues/12684#issuecomment-1813799924

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Add POSIX_SC_CHILD_MAX and POSIX_SC_CLK_TCK constants

Closes GH-12689

Refactor pcntl_sigprocmask()/pcntl_sigwaitinfo()/pcntl_sigtimedwait() (#11860)

[RFC] DOM HTML5 parsing and serialization support (#12111)

Add note to UPGRADING about proc_open changes for invalid command

Closes GH-12589

Improve browscap get_browser performance (#12651)

* Split function and use _new variant to avoid redundant checks

* Precompute better array size to avoid rehashing

* Use ne

Improve browscap get_browser performance (#12651)

* Split function and use _new variant to avoid redundant checks

* Precompute better array size to avoid rehashing

* Use new function to add into array instead of merging into, preventing temporary memory allocations

* Convert to regex without separate copy + lowering

We're already doing a character-wise loop after lowering, so just lower
it character by character instead of looping over it twice and
allocating memory.

* Use HASH_MAP loop because htab can never be packed

This saves additional checks.

* Move destructor to more sensible place

* Remove now unused browscap_zval_copy_ctor

* Use zend_string_release_ex variant where possible

* Implement dedicated greedy wildcard matching algorithm

This avoids compiling, allocating and caching regexes and should run in
the same complexity.

* Cache previous length instead of repeatedly recomputing it

* Add additional optimization to wildcard * matching

* Move cheap checks to the callsite

The function prologue and epilogue have a stupidly high overhead for
those 2 simple checks at the start.

We can't always-inline the reg_compare function because it contains
alloca, and the alloca is really important for performance.
Instead, move those cheap checks to the call site.

* Use specialised loop to avoid unnecessary conversions and checks

* Optimize counting loop by taking into account the prefix

* Precompute the hash values of known keys

* [ci skip] UPGRADING

* Code style

* Add a note why we have the early-skip checks in the loop

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Fix GH-9344: pgsql pipeline mode proposal.

Adding pg_send_flush_request.
Fix freeze after next execute pg_send_* on PQgetResult in _php_pgsql_link_has_results.
Set nonblocking for pi

Fix GH-9344: pgsql pipeline mode proposal.

Adding pg_send_flush_request.
Fix freeze after next execute pg_send_* on PQgetResult in _php_pgsql_link_has_results.
Set nonblocking for pipelining mode.
No flush client buffer in pg_send_* for pipelining mode.

Close GH-12644

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[ci skip] UPGRADING

Optimize strcspn (#12594)

[ci skip] fix typo in UPGRADING

[ci skip] Intl extension UPGRADING note

Fix GH-12532: PharData created from zip has incorrect timestamp

The datetime stored in the DOS time fields, which is what zip standard
uses, is local time without a timezone. There's an

Fix GH-12532: PharData created from zip has incorrect timestamp

The datetime stored in the DOS time fields, which is what zip standard
uses, is local time without a timezone. There's an extension to the zip
file format since '97 that allows storing a unix timestamp (in UTC) in
the header for both the central directory and the local entries.
This patch adds support for this.

Closes GH-12548.

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Typed constants in sqlite extension (#12379)

Typed constants in Intl extenstion (#12360)

Typed constants in PDO extension (#12362)

Add fast mb_strcut implementation for UTF-16

Similar to the fast, specialized mb_strcut implementation for UTF-8
in 1f0cf133db, this new implementation of mb_strcut for UTF-16 strings

Add fast mb_strcut implementation for UTF-16

Similar to the fast, specialized mb_strcut implementation for UTF-8
in 1f0cf133db, this new implementation of mb_strcut for UTF-16 strings
just examines a few bytes before each cut point.

Even for short strings, the new implementation is around 2x faster.
For strings around 10,000 bytes in length, it comes out about 100-500x
faster in my microbenchmarks.

The new implementation behaves identically to the old one on valid
UTF-16 strings; a fuzzer was used to help verify this.

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Typed constants in reflection extension (#12378)

ext/soap: Add support for clark notation for namespaces in class map

Closes GH-12411.

Implement request #68325: parse huge option for xml_parser_create (#12256)