[skip ci] Document zend_enum_get_case_by_value() function

This function was introduced in d62d50b88ecf8ed838b20d48006a32277eb569fe.

Require PHP 7.4 at least for running the build system (#9519)

Update gen_stub to avoid compile errors on duplicate function names

Closes GH-9406

Drop unsupported libxml2 2.10.0 symbols

The Docbook parser module has been removed completely. Support for
XPointer locations (ranges and points) is disabled by default, and will
ev

Drop unsupported libxml2 2.10.0 symbols

The Docbook parser module has been removed completely. Support for
XPointer locations (ranges and points) is disabled by default, and will
eventually be removed completely. Given that the maintainer comments
on the latter: "Be warned that this part of the code base is buggy and
had many security issues in the past", it seems to be prudent to no
longer build with XPointer locations support right away.

To be able to build against libxml2 2.10.0, we remove the export
definitions for Windows.

Closes GH-9358.

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Add a new zend API to check that strings don't have NUL bytes (#9375)

Co-authored-by: Christoph M. Becker <cmbecker69@gmx.de>

Make pestr[n]dup infallible (#9295)

Fixes GH-9128
Closes GH-9295

Include internal functions in the observer API

There are two main motivations to this:
a) The logic for handling internal and userland observation can be unified.
b) Unwinding of obs

Include internal functions in the observer API

There are two main motivations to this:
a) The logic for handling internal and userland observation can be unified.
b) Unwinding of observed functions on a bailout does notably not include observers. Even if users of observers were to ensure such handling themselves, it would be impossible to retain the relative ordering - either the user has to unwind all internal observed frames before the automatic unwinding (zend_observer_fcall_end_all) or afterwards, but not properly interleaved.

Signed-off-by: Bob Weinand <bobwei9@hotmail.com>

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Extend deprecation notices to is_callable($foo) and callable $foo

Implements https://wiki.php.net/rfc/partially-supported-callables-expand-deprecation-notices
so that uses of "self" and

Extend deprecation notices to is_callable($foo) and callable $foo

Implements https://wiki.php.net/rfc/partially-supported-callables-expand-deprecation-notices
so that uses of "self" and "parent" in is_callable() and callable
type constraints now raise a deprecation notice, independent of the
one raised when and if the callable is actually invoked.

A new flag is added to the existing check_flags parameter of
zend_is_callable / zend_is_callable_ex, for use in internal calls
that would otherwise repeat the notice multiple times. In particular,
arguments to internal function calls are checked first based on
arginfo, and then again during ZPP, so the former suppresses the
deprecation notice.

Some existing tests which raised this deprecation have been updated
to avoid the syntax, but the existing version retained for maximum
regression coverage until it is made an error.

With thanks to Juliette Reinders Folmer for the RFC and initial
investigation.

Closes GH-8823.

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Reduce memory allocated by var_export, json_encode, serialize, and other (#8902)

smart_str uses an over-allocated string to optimize for append operations. Functions that use smart_str tend

Reduce memory allocated by var_export, json_encode, serialize, and other (#8902)

smart_str uses an over-allocated string to optimize for append operations. Functions that use smart_str tend to return the over-allocated string directly. This results in unnecessary memory usage, especially for small strings.

The overhead can be up to 231 bytes for strings smaller than that, and 4095 for other strings. This can be avoided for strings smaller than `4096 - zend_string header size - 1` by reallocating the string.

This change introduces `smart_str_trim_to_size()`, and calls it in `smart_str_extract()`. Functions that use `smart_str` are updated to use `smart_str_extract()`.

Fixes GH-8896

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Add upgrading internals entry for fgetcsv() changes

main/streams/plain_wrapper: skip lseek(SEEK_CUR) for newly opened files

A file that has just been opened is known to be at offset zero, and
the lseek(SEEK_CUR) system call to determine t

main/streams/plain_wrapper: skip lseek(SEEK_CUR) for newly opened files

A file that has just been opened is known to be at offset zero, and
the lseek(SEEK_CUR) system call to determine the current offset can be
skipped.

Closes #8540.

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Convert return type of various object handlers from int to zend_result (#8755)

Deprecate zend_atol() / add zend_ini_parse_quantity() (#7951)

Add zend_ini_parse_quantity() and deprecate zend_atol(), zend_atoi()

zend_atol() and zend_atoi() don't just do number p

Deprecate zend_atol() / add zend_ini_parse_quantity() (#7951)

Add zend_ini_parse_quantity() and deprecate zend_atol(), zend_atoi()

zend_atol() and zend_atoi() don't just do number parsing.
They also check for a 'K', 'M', or 'G' at the end of the string,
and multiply the parsed value out accordingly.

Unfortunately, they ignore any other non-numerics between the
numeric component and the last character in the string.
This means that numbers such as the following are both valid
and non-intuitive in their final output.

* "123KMG" is interpreted as "123G" -> 132070244352
* "123G " is interpreted as "123 " -> 123
* "123GB" is interpreted as "123B" -> 123
* "123 I like tacos." is also interpreted as "123." -> 123

Currently, in php-src these functions are used only for parsing ini values.

In this change we deprecate zend_atol(), zend_atoi(), and introduce a new
function with the same behavior, but with the ability to report invalid inputs
to the caller. The function's name also makes the behavior less unexpected:
zend_ini_parse_quantity().

Co-authored-by: Sara Golemon <pollita@php.net>

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[skip ci] Add missing UPGRADING.INTERNALS entries

Replace php_stdint.h header with standard headers (#8613)

Stop copying zend_module_entry (#8551)

I did some historical digging and could not figure out why a copy is
made. Additionally, the copy was not using the `.size` member, so it
was p

Stop copying zend_module_entry (#8551)

I did some historical digging and could not figure out why a copy is
made. Additionally, the copy was not using the `.size` member, so it
was probably wrong, but it's been that way for quite some time.

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Fix some minor warnings (#8568)

* Fix php_apache_get_version prototype

Avoids an error with -Werror=strict-prototypes when building the
Apache SAPI.

* Fix -Werror=strin

Fix some minor warnings (#8568)

* Fix php_apache_get_version prototype

Avoids an error with -Werror=strict-prototypes when building the
Apache SAPI.

* Fix -Werror=stringop-truncation in pdo_raise_impl_error

* Note pdo_error_type BC break

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Remove strnatcmp_ex() wrappers

These APIs always returned SUCCESS.

Closes GH-8195

Optimize stripos/stristr

Closes GH-7847
Closes GH-7852

Previously stripos/stristr would lowercase both the haystack and the
needle to reuse strpos. The approach in this PR i

Optimize stripos/stristr

Closes GH-7847
Closes GH-7852

Previously stripos/stristr would lowercase both the haystack and the
needle to reuse strpos. The approach in this PR is similar to strpos.
memchr is highly optimized so we're using it to search for the first
character of the needle in the haystack. If we find it we compare the
remaining characters of the needle manually.

The new implementation seems to perform about half as well as strpos (as
two memchr calls are necessary to find the next candidate).

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ZEND_INIT_FCALL is only produced when function exists at compile time (#7728)

Remove (ZEND_)WRONG_PARAM_COUNT_WITH_RETVAL macros

A TypeError is always emitted therefore assigning a retval is pointless and incorrect.

Remove zend_binary_zval_strcasecmp() APIs

These are thin wrappers ... around the wrong functions. They call
the "_l()" version of the underlying APIs. For clarify, just call
the wrap

Remove zend_binary_zval_strcasecmp() APIs

These are thin wrappers ... around the wrong functions. They call
the "_l()" version of the underlying APIs. For clarify, just call
the wrapped API directly.

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Prepare for PHP 8.2

Use zend_long for resource ID

Currently, resource IDs are limited to 32-bits. As resource IDs
are not reused, this means that resource ID overflow for
long-running processes is very

Use zend_long for resource ID

Currently, resource IDs are limited to 32-bits. As resource IDs
are not reused, this means that resource ID overflow for
long-running processes is very possible.

This patch switches resource IDs to use zend_long instead, which
means that on 64-bit systems, 64-bit resource IDs will be used.
This makes resource ID overflow practically impossible.

The tradeoff is an 8 byte increase in zend_resource size.

Closes GH-7436.

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Drop TsHashTable (#7351)