Return value of mb_get_info can be NULL

This has been the case at least since PHP 5.4. Thanks to Girgias for
pointing it out.

It appears that there are several global variables

Return value of mb_get_info can be NULL

This has been the case at least since PHP 5.4. Thanks to Girgias for
pointing it out.

It appears that there are several global variables internal to mbstring
which can be queried via mb_get_info() and which could be NULL, but
at the very least, we know that "mbstring.http_input" is one of them.

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Fix gc_status type info

Closes GH-11722

Forward shutdown exceptions to user error handlers

Fixes GH-10695
Closes GH-110905

Use shared, immutable array for return value of mb_list_encodings

This will allow us to easily check in other mbstring functions if the
list of all supported encodings, returned by mb_li

Use shared, immutable array for return value of mb_list_encodings

This will allow us to easily check in other mbstring functions if the
list of all supported encodings, returned by mb_list_encodings, is
passed in as input to another function.

Co-authored-by: Ilija Tovilo <ilija.tovilo@me.com>

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Improve handling of XML options

Mark boolean options as such
Warn on invalid types
Stubs info

Closes GH-10675

Fix stub type info for posix_getrlimit

Add four extra fields to gc_status() (#9336)

- running: true if garbage collection is currently running
- protected: true if the garbage collector is protected and root
additions a

Add four extra fields to gc_status() (#9336)

- running: true if garbage collection is currently running
- protected: true if the garbage collector is protected and root
additions are forbidden
- full: true if the garbage collector buffer size exceeds GC_MAX_BUF_SIZE
- buffer_size: current garbage collector buffer size

Documentation for existing fields:

- runs: the number of times the garbage collector has been run
- collected: the number of objects collected
- threshold: the number of roots in the buffer which will trigger
garbage collection
- roots: the current number of roots in the buffer

Updated manual example output:

array(8) {
["running"]=>
bool(false)
["protected"]=>
bool(false)
["full"]=>
bool(false)
["runs"]=>
int(5)
["collected"]=>
int(100002)
["threshold"]=>
int(50001)
["buffer_size"]=>
int(131072)
["roots"]=>
int(0)
}

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Regenerate optimizer func info after preprocessor condition changes

Fix mb_strimwidth RC info

Closes GH-9254

Fix rc info of iterator_to_array (#9080)

This function can now return a copy of the provided array, resulting in
a value of RC != 1.

Implement Random Extension

https://wiki.php.net/rfc/rng_extension
https://wiki.php.net/rfc/random_extension_improvement

Fix RC func info of str_split (#9016)

Introduced in GH-8945

With RETURN_EMPTY_ARRAY this function can now return an interned array which
has refcount 2.

Declare true return types (#8759)

Regen missing Zend/Optimizer/zend_func_infos.h

Regenerate optimizer function info

Improve and fix stub return types (#8368)

Regenerate optimized func infos

Using the --generate-optimizer-info option for ./build/gen_stubs.php

Add more specific array return type hints for various extensions - part 2

ext/ftp, ext/gmp, ext/intl

Closes GH-7433

Add more specific array return type hints for various extensions - part 1

ext/bz2, ext/calendar, ext/dba, ext/enchant

Closes GH-7432

Regenerate optimizer info

While the stub definitions were updated, the generated optimizer
info was stale.

Add more specific array return type hints for various extensions - part 6 (#7474)

Add more specific array return type hints for various extensions - part 4 (#7469)

Add more specific array return type hints for various extensions - part 3 (#7467)

Generate optimizer func info from stubs for ext/standard - part 3 (#7426)

Specify a few array func info entries (#7425)