Add common code for magic method assignment

This was repeated three times.

Drop unused param in zend_parse_arg_class_name_or_obj()

Use consistent types

uint32_t type for argument count
size_t for length of char*
zend_bool for a zval bool arg

Closes GH-5845

Add zend_wrong_parameter_error to reduce the size of ZPP macro

Closes GH-5831.

Voidify some ZEND_API functions

Closes GH-5805

Remove no_separation flag

Avoid some unnecessary uses of no_separation=0

For the rare cases where references are part of the API,
construct them explicitly. Otherwise do not allow separation.

Add string or object ZPP macros

Closes GH-5788

Add ZPP macros for class name or object parameters

Closes GH-5647

Cache __unserialize() instead of unserialize()

We should use these cache slots for the new object serialization
mechanism rather than the old one.

Add ZVAL_OBJ_COPY macro

For the common ZVAL_OBJ + GC_ADDREF pattern.
This mirrors the existing ZVAL_STR_COPY API.

Use unused attribute for _dummy

The (void)_dummy is apparently considered a read of an uninitialized
variable. As it is a _Bool now, which has trap representations, this
is no longer

Use unused attribute for _dummy

The (void)_dummy is apparently considered a read of an uninitialized
variable. As it is a _Bool now, which has trap representations, this
is no longer considered legal and results in somewhat odd ubsan
warnings of the form:

runtime error: load of value 0, which is not a valid value for type 'zend_bool' (aka 'bool')

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Add zend_call_known_function() API family

This adds the following APIs:

void zend_call_known_function(
zend_function *fn, zend_object *object, zend_class_entry *called_scope

Add zend_call_known_function() API family

This adds the following APIs:

void zend_call_known_function(
zend_function *fn, zend_object *object, zend_class_entry *called_scope,
zval *retval_ptr, int param_count, zval *params);

void zend_call_known_instance_method(
zend_function *fn, zend_object *object, zval *retval_ptr, int param_count, zval *params);
void zend_call_known_instance_method_with_0_params(
zend_function *fn, zend_object *object, zval *retval_ptr);
void zend_call_known_instance_method_with_1_params(
zend_function *fn, zend_object *object, zval *retval_ptr, zval *param);
void zend_call_known_instance_method_with_2_params(
zend_function *fn, zend_object *object, zval *retval_ptr, zval *param1, zval *param2);

These are used to perform a call if you already have the
zend_function you want to call. zend_call_known_function()
is the base API, the rest are just really thin wrappers around
it for the common case of instance method calls.

Closes GH-5692.

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Add helper APIs for maybe-interned string creation

Add ZVAL_CHAR/RETVAL_CHAR/RETURN_CHAR as a shortcut for using
ZVAL_INTERNED_STRING and ZSTR_CHAR.

Add zend_string_init_fast()

Add helper APIs for maybe-interned string creation

Add ZVAL_CHAR/RETVAL_CHAR/RETURN_CHAR as a shortcut for using
ZVAL_INTERNED_STRING and ZSTR_CHAR.

Add zend_string_init_fast() as a helper for the empty string /
one char interned string / zend_string_init() pattern.

Also add corresponding ZVAL_STRINGL_FAST etc macros.

Closes GH-5684.

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Constify char * arguments of APIs

Closes GH-5676.

Add Attributes

Co-authored-by: Martin Schröder <m.schroeder2007@gmail.com>

Refactor ZPP API to use uint32_t as everywhere else

Closes GH-5609

Allow null callback to array_filter()

With same behavior as not passing it.

Rename zend_zval_get_type() API

We have a bunch of APIs for getting type names and it's sometimes
hard to keep them apart ... make it clear that this is the one
you definitely do not

Rename zend_zval_get_type() API

We have a bunch of APIs for getting type names and it's sometimes
hard to keep them apart ... make it clear that this is the one
you definitely do not want to use.

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Fix [-Wundef] warning in Zend folder

Remove old ARG_COUNT() macro

Use ZEND_NUM_ARGS() instead.

Clsoes GH-5551

Fix UNKNOWN default values in various extensions

Closes GH-5514

Add Fast ZPP string|int type check

Convert UNKNOWN default values to null in ext/date

Closes GH-5509

Completely remove disabled functions from function table

Currently, disabling a function only replaces the internal
function handler with one that throws a warning, and a few
places

Completely remove disabled functions from function table

Currently, disabling a function only replaces the internal
function handler with one that throws a warning, and a few
places in the engine special-case such functions, such as
function_exists. This leaves us with a Schrödinger's function,
which both does not exist (function_exists returns false) and
does exist (you cannot define a function with the same name).
In particular, this prevents the implementation of robust
polyfills, as reported in https://bugs.php.net/bug.php?id=79382:

if (!function_exists('getallheaders')) {
function getallheaders(...) { ... }
}

If getallheaders() is a disabled function, this code will break.

This patch changes disable_functions to remove the functions from
the function table completely. For all intents and purposes, it
will look like the function does not exist.

This also renders two bits of PHP functionality obsolete and thus
deprecated:

* ReflectionFunction::isDisabled(), as it will no longer be
possible to construct the ReflectionFunction of a disabled
function in the first place.
* get_defined_functions() with $exclude_disabled=false, as
get_defined_functions() now never returns disabled functions.

Fixed bug #79382.

Closes GH-5473.

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