$context parameter of get_headers() is nullable

Closes GH-7813.

String default values are enclosed in quotes rather than apostrophes

Declare a few missing function return types

Closes GH-7395

fix bad refactor of #7136

Enable net_get_interfaces on IBM i PASE

On IBM i, getifaddrs is available renamed as Qp2getifaddrs; freeifaddrs
and struct ifaddr follow a similar fate. I assume this is in case AIX

Enable net_get_interfaces on IBM i PASE

On IBM i, getifaddrs is available renamed as Qp2getifaddrs; freeifaddrs
and struct ifaddr follow a similar fate. I assume this is in case AIX
decides to add it (as if). As such, just use the same implementation,
but rename the standard ones to the IBM i definitions and include its
header.

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Remove assert_options() return value info

The ASSERT_CALLBACK value is not validated at all -- it's possible
to set it to an arbitrary value. As such, the function can also
return an

Remove assert_options() return value info

The ASSERT_CALLBACK value is not validated at all -- it's possible
to set it to an arbitrary value. As such, the function can also
return any value or type (even without outright abuse, the opcache
func info was wrong in that the return can be rcn, and the array
can be array_of_ref).

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Remove the "getdir" function which was introduced accidentally

The actual name of this function is dir(), but ever since it was
introduced in PHP 3, its internal name was "getdir", leadi

Remove the "getdir" function which was introduced accidentally

The actual name of this function is dir(), but ever since it was
introduced in PHP 3, its internal name was "getdir", leading to it
being mistaken for an alias. This went unnoticed until the switch
to stubs for generating arginfo, at which point getdir() became a
real but undocumented function.

Fixes bug #80914.

Closes GH-6855.

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Don't return null from password_get_info()

The get_info() handler should never fail, but even if it does,
we should still return a proper info array -- it doesn't make
sense that a c

Don't return null from password_get_info()

The get_info() handler should never fail, but even if it does,
we should still return a proper info array -- it doesn't make
sense that a completely incorrect hash returns an info array,
but a hash that is recognized but for which the options can't
be extracted would return null.

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Fix parameter name

Levenshtein is about insertion, replacement and deletion.

Closes GH-6560.

getlastmod() can return false

At least this can happen during preloading.

Parameter type and name fixes in ext/standard

Closes GH-6382

Fix #80229: assert_options should have int and bool for parameter PHPDoc

Closes GH-6348

Update ext/spl parameter names

Closes GH-6284.

Update ext/sockets parameter names

Also change $max_length to $length in a number of filesystem APIs,
where our usage was inconsistent.

Closes GH-6276.

Update ext/posix parameter names

Closes GH-6275.

Review parameter names in ext/zlib

Closes GH-6250

Update ext/standard parameter names

Closes GH-6214.

Update mbstring parameter names

Closes GH-6207.

Use callable type in register_shutdown_function()

To make things a bit less weird, split off the function name into
a zval stored separately from the arguments. This allows us to
use

Use callable type in register_shutdown_function()

To make things a bit less weird, split off the function name into
a zval stored separately from the arguments. This allows us to
use normal zpp and get standard behavior.

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Add proper count() parameter type

We can make this Countable|array now.

Normalize substr() behavior

Make the behavior of substr(), mb_substr(), iconv_substr() and
grapheme_substr() consistent when it comes to the handling of
out of bounds offsets. substr

Normalize substr() behavior

Make the behavior of substr(), mb_substr(), iconv_substr() and
grapheme_substr() consistent when it comes to the handling of
out of bounds offsets. substr() will now always clamp out of
bounds offsets to the string boundary. Cases that previously
returned false will now return an empty string. This means that
substr() itself *always* returns a string now (like mb_substr()
already did before.)

Closes GH-6182.

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Promote pack/unpack format errors

Errors related to invalid format strings (unlike data mismatch
errors) should throw ValueError.

Closes GH-6185.

Support uuencoding empty string

Cross checking implementations from other languages, empty strings
are always allowed. PHP's output is peculiar due to it's insistence
to encode a tra

Support uuencoding empty string

Cross checking implementations from other languages, empty strings
are always allowed. PHP's output is peculiar due to it's insistence
to encode a trailing \0, but otherwise sensible and does round-trip
as expected.

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stream_bucket_new() cannot return false

php_stream_bucket_new() is infallible.

stream_get_transports/wrappers cannot return false

These may return an empty array, but not false.