curl: Add `curl_multi_get_handles()` (#16363)

see https://curl.se/libcurl/c/curl_multi_get_handles.html

ext/curl: Add `CURLINFO_POSTTRANSFER_TIME_T` support (GH-15849)

libcurl ref: [`CURLINFO_POSTTRANSFER_TIME_T`](https://curl.se/libcurl/c/CURLINFO_POSTTRANSFER_TIME_T.html)

`CURLINFO_

ext/curl: Add `CURLINFO_POSTTRANSFER_TIME_T` support (GH-15849)

libcurl ref: [`CURLINFO_POSTTRANSFER_TIME_T`](https://curl.se/libcurl/c/CURLINFO_POSTTRANSFER_TIME_T.html)

`CURLINFO_POSTTRANSFER_TIME_T` is a libcurl info option that returns
the time it took to "post" the transfer. Available since libcurl 8.10.0

This value is also exposed as `posttransfer_time_us` in the
`curl_getinfo()` return value when the `$option` parameter is not
passed.

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ext/curl: Add `CURLOPT_DEBUGFUNCTION` option (GH-15674)

This adds support for `CURLOPT_DEBUGFUNCTION`[^1] Curl option to set a
custom callback that gets called with debug information dur

ext/curl: Add `CURLOPT_DEBUGFUNCTION` option (GH-15674)

This adds support for `CURLOPT_DEBUGFUNCTION`[^1] Curl option to set a
custom callback that gets called with debug information during the
lifetime of a Curl request.

The callback gets called with the `CurlHandle` object, an integer
containing the type of the debug message, and a string containing the
debug message. The callback may get called multiple times with the
same message type during a request.

PHP already uses `CURLOPT_DEBUGFUNCTION` functionality to internally
to expose a Curl option named `CURLINFO_HEADER_OUT`.

However,`CURLINFO_HEADER_OUT` is not a "real" Curl option supported
by libcurl. Back in 2006, `CURLINFO_HEADER_OUT` was added[^2] as
a Curl option by using the debug-callback feature. Git history does
not run that back to show why `CURLINFO_HEADER_OUT` was added as a
Curl option, and why the other debug types (such as
`CURLINFO_HEADER_IN` were not added as Curl options, but this seems
to be a historical artifact when we added features without trying
to be close to libcurl options.

This approach has a few issues:

1. `CURLINFO_HEADER_OUT` is not an actual Curl option supported by
upstream libcurl.

2. All of the Curl options have `CURLOPT_` prefix, and `CURLINFO_HEADER_OUT`
is the only Curl "option" that uses the `CURLINFO` prefix. This exception
is, however, noted[^3] in docs.

3. When `CURLINFO_HEADER_OUT` is set, the `CURLOPT_VERBOSE` is also implicitly
set. This was reported[^4] to bugs.php.net, but the bug is marked as wontfix.

This commit adds support for `CURLOPT_DEBUGFUNCTION`. It extends the existing
`curl_debug` callback to store the header-in information if it encounters
a debug message with `CURLINFO_HEADER_OUT`. In all cases, if a callable
is set, it gets called.

`CURLOPT_DEBUGFUNCTION` intends to replace `CURLINFO_HEADER_OUT` Curl
option as a versatile alternative that can also be used to extract
other debug information such as SSL data, text information messages,
incoming headers, as well as headers sent out (which `CURLINFO_HEADER_OUT`
makes available).

The callables are allowed to throw exceptions, but the return values are
ignored.

`CURLOPT_DEBUGFUNCTION` requires `CURLOPT_VERBOSE` enabled, and setting
`CURLOPT_DEBUGFUNCTION` does _not_ implicitly enable `CURLOPT_VERBOSE`.

If the `CURLOPT_DEBUGFUNCTION` option is set, setting `CURLINFO_HEADER_OUT`
throws a `ValueError` exception. Setting `CURLOPT_DEBUGFUNCTION` _after_
enabling `CURLINFO_HEADER_OUT` is allowed. Technically, it is possible
for both functionality (calling user-provided callback _and_ storing
header-out data) is possible, setting `CURLINFO_HEADER_OUT` is not
allowed to encourage the use of `CURLOPT_DEBUGFUNCTION` function.

This commit also adds the rest of the `CURLINFO_` constants used as
the `type` integer value in `CURLOPT_DEBUGFUNCTION` callback.

---

[^1]: [cur.se - CURLOPT_DEBUGFUNCTION](https://curl.se/libcurl/c/CURLOPT_DEBUGFUNCTION.html)
[^2]: [`5f25d80`](https://github.com/php/php-src/commit/5f25d80d106004692dacb9c01cdc49c7c883a13a)
[^3]: [curl_setopt doc mentioning `CURLINFO_` prefix is intentional](https://www.php.net/manual/en/function.curl-setopt.php#:~:text=prefix%20is%20intentional)
[^4]: [bugs.php.net - `CURLOPT_VERBOSE` does not work with `CURLINFO_HEADER_OUT`](https://bugs.php.net/bug.php?id=65348)

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ext/curl: libcurl `CURLOPT_{FTP_RESPONSE_TIMEOUT,ENCODING}` replacements (#15126)

ext/curl: Add `CURLOPT_PREREQFUNCTION` (#13255)

Curl >= 7.80.0 supports declaring a function for `CURLOPT_PREREQFUNCTION` option
that gets called after Curl establishes a connection (inc

ext/curl: Add `CURLOPT_PREREQFUNCTION` (#13255)

Curl >= 7.80.0 supports declaring a function for `CURLOPT_PREREQFUNCTION` option
that gets called after Curl establishes a connection (including the TLS handshake
for HTTPS connections), but before the actual request is made.

The callable must return either `CURL_PREREQFUNC_OK` or `CURL_PREREQFUNC_ABORT` to
allow or abort the request.

This adds support for it to PHP with required ifdef.

- libc: https://curl.se/libcurl/c/CURLOPT_PREREQFUNCTION.html

Co-authored-by: Gina Peter Bnayard <girgias@php.net>

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GH-15440: adding CURLOPT_TCP_KEEPCNT constant (8.9.0) (#15446)

close GH-15446

ext/curl: Add HTTP/3 constants (#15350)

This intends to supersede the two following PRs:
- #12000 because it does not modify the stub file, but only update the
arginfo file. It a

ext/curl: Add HTTP/3 constants (#15350)

This intends to supersede the two following PRs:
- #12000 because it does not modify the stub file, but only update the
arginfo file. It also proposes to merge to GA branches, and is
currently marked as Requires RM Approval.
- #12543 Essentially the same as this PR and from the same author, as
this, but its about a year old and requires rebasing anyway.

This adds the `CURL_HTTP_VERSION_3` and `CURL_HTTP_VERSION_3ONLY`
constants on relevant versions (7.66 and 7.88 respectively).

It is possible to use HTTP/3 without having these constants declared,
but having them declared in PHP makes things more approachable and
"official".

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ext/curl: Bump minimum Curl version to >= 7.61.0 (#13259)

Bumps the minimum required libcurl version to 7.61.0.

Please also see #4917, which bumped minimum libcurl version to the cu

ext/curl: Bump minimum Curl version to >= 7.61.0 (#13259)

Bumps the minimum required libcurl version to 7.61.0.

Please also see #4917, which bumped minimum libcurl version to the current >= 7.29.0.
This bumps the minimum requirement to Curl 7.61.0 (released 2018 Sept).

Ubuntu, Debian, RHEL, and RHEL derivatives have major and LTS version bumps this year. Following are the
libcurl-dev/libcurl-devel versions available in the oldest supported (LTS or otherwise) in major OSs.

- Debian buster: [7.64](https://packages.debian.org/buster/libcurl4-openssl-dev)
- Ubuntu 20.04: [7.68](https://packages.ubuntu.com/focal/libcurl-dev)
- CentOS/RHEL 7: 7.29
- RHEL 8/Rocky 8/EL 8: 7.61
- Fedora 38: 7.87

RHEL/CentOS 7 reaches EOL mid 2024, so for PHP 8.4 scheduled towards the end of this year, we can safely
bump the minimum libcurl version.

7.61.0 was selected as the new minimum because RHEL and derivatives have libcurl-devel version 7.61. RHEL 8 is
a current and supported RHEL version.

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ext/curl: deprecate CURLOPT_BINARYTRANSFER

This is long overdue, CURLOPT_BINARYTRANSFER has been a no-op since PHP5.1.2 in 2004 (ref https://bugs.php.net/bug.php?id=55635 )

Close GH

ext/curl: deprecate CURLOPT_BINARYTRANSFER

This is long overdue, CURLOPT_BINARYTRANSFER has been a no-op since PHP5.1.2 in 2004 (ref https://bugs.php.net/bug.php?id=55635 )

Close GH-13114.

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Add new curl constants from curl until (including) 7.87 (#10459)

Fixes GH-10454

Declare ext/curl constants in stubs (#9384)

Add new curl_upkeep() function

Generate optimizer func info from stubs for ext/curl, ext/mysqli, ext/pcre (#7407)

Not serializable flag permeation

Remove unnecessary curl version guards in stubs

We have bumped the libcurl requirement to 7.29.0 in PHP 8.1,
but the function declarations in the stubs were still conditional
on the

Remove unnecessary curl version guards in stubs

We have bumped the libcurl requirement to 7.29.0 in PHP 8.1,
but the function declarations in the stubs were still conditional
on the curl version. Drop them to make it more obvious that these
functions are always available.

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Implicitly enable function entry generation when class entry generation is enabled

Closes GH-6675

Generate class entries for a few extensions

Relates to GH-6644

Fix curl_multi_getcontent() parameter name

While the function name starts with curl_multi_*, the function
actually accepts a CurlHandle. As such, it should also use just
$handle as t

Fix curl_multi_getcontent() parameter name

While the function name starts with curl_multi_*, the function
actually accepts a CurlHandle. As such, it should also use just
$handle as the parameter name.

Closes GH-6435.

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Improve parameter names in ext/curl

Closes GH-6155

Fix UNKNOWN default values in ext/curl

Closes GH-5734

Remove the deprecated parameter of curl_version()

Convert CURL resources to objects

Closes GH-5402

Co-authored-by: Nikita Popov <nikita.ppv@gmail.com>

Generate function entries from stubs for a couple of extensions

Closes GH-5347

Add union return types with one class

Add union return types for function stubs