Fix bug #81474: Make ReflectionAttribute non-final

This backports GH-7520 to PHP 8.0.

Closes GH-7545.

Export AST for default value strings in reflection

When dumping default values in ReflectionXXX::__toString(), for
expression initializers print the AST export instead of trying to
e

Export AST for default value strings in reflection

When dumping default values in ReflectionXXX::__toString(), for
expression initializers print the AST export instead of trying to
evaluate the expression. With the introduction of "new in
initializers" the result of the evaluation will commonly not be
printable at all, and "__toString" will throw an exception, which
is not particularly useful. Using the AST export also provides more
information on how the parameter was originally declared, e.g. it
preserves the fact that a certain constant was used.

Closes GH-7540.

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Fixed bug #81457

When Reflection internally instantiates a ReflectionClass, it
should create a more specific ReflectionEnum instance if the
class is actually an enum.

Always use CE_CACHE, remove TYPE_HAS_CE (#7336)

Currently, CE_CACHE on strings is only used with opcache interned strings. This
patch extends usage to non-opcache interned strings as wel

Always use CE_CACHE, remove TYPE_HAS_CE (#7336)

Currently, CE_CACHE on strings is only used with opcache interned strings. This
patch extends usage to non-opcache interned strings as well. This means that
most type strings can now make use of CE_CACHE even if opcache is not loaded,
which allows us to remove TYPE_HAS_CE kind, and fix some discrepancies
depending on whether a type stores a resolved or non-resolved name.

There are two cases where CE_CACHE will not be used:

* When opcache is not used and a permanent interned string (that is not an
internal class name) is used as a type name during the request. In this case
we can't allocate a map_ptr index for the permanent string, as it would be
not be in the permanent map_ptr index space.
* When opcache is used but the script is not cached (e.g. eval'd code or
opcache full). If opcache is used, we can't allocate additional map_ptr
indexes at runtime, because they may conflict with indexes allocated by
opcache.

In these two cases we would end up not using CE caching for property types
(argument/return types still have the separate cache slot).

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Use zend_string_equals_literal_ci()

Fix bug #81303 improve match errors

Display the readonly property modifier when printing reflection info

Add RETURN/RETVAL_COPY_DEREF() macros

These were missing from the set...

I think quite a few of these usages don't actually need the DEREF,
but I've just kept things as is for n

Add RETURN/RETVAL_COPY_DEREF() macros

These were missing from the set...

I think quite a few of these usages don't actually need the DEREF,
but I've just kept things as is for now.

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Remove leading underscore for _zend_hash_find_known_hash (#7260)

Convert zend_hash_find_ex(..., 1) to zend_hash_find_known_hash(...)
Convert zend_hash_find_ex(..., 0) to zend_hash_find(.

Remove leading underscore for _zend_hash_find_known_hash (#7260)

Convert zend_hash_find_ex(..., 1) to zend_hash_find_known_hash(...)
Convert zend_hash_find_ex(..., 0) to zend_hash_find(...)

Also add serializable changes to UPGRADING.INTERNALS summary

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Merge branch 'master' of github.com:php/php-src

* 'master' of github.com:php/php-src:
Implement readonly properties

Not serializable flag permeation

Implement readonly properties

Add support for readonly properties, for which only a single
initializing assignment from the declaring scope is allowed.

RFC: https://wiki.php.net

Implement readonly properties

Add support for readonly properties, for which only a single
initializing assignment from the declaring scope is allowed.

RFC: https://wiki.php.net/rfc/readonly_properties_v2

Closes GH-7089.

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Fix leak if attribute arg evaluation fails while printing

Make ReflectionProperty/Method always accessible

With this patch, it is no longer required to call
`ReflectionProperty#setAccessible()` or
`ReflectionMethod#setAccessible()` with `tr

Make ReflectionProperty/Method always accessible

With this patch, it is no longer required to call
`ReflectionProperty#setAccessible()` or
`ReflectionMethod#setAccessible()` with `true`.

If a userland consumer already got to the point of accessing
object/class information via reflection, it makes little sense
for `ext/reflection` to disallow accessing `private`/`protected`
symbols by default.

After this patch, calling `ReflectionProperty#setAccessible(true)`
or `ReflectionMethod#setAccessible(true)` on newly instantiated
`ReflectionProperty` or `ReflectionMethod` respectively will have
no effect.

RFC: https://wiki.php.net/rfc/make-reflection-setaccessible-no-op

Closes GH-5412.

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Fix #80097: Have ReflectionAttribute implement Reflector and __toString

Implement printing for ReflectionAttribute. Attributes aren't
printed as part of reflection output for other struc

Fix #80097: Have ReflectionAttribute implement Reflector and __toString

Implement printing for ReflectionAttribute. Attributes aren't
printed as part of reflection output for other structures (classes
etc) yet.

Closes GH-6117.

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Add support for final class constants

RFC: https://wiki.php.net/rfc/final_class_const

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

Slightly clean up reflection constant printing

The basic formatting is always the same, the only thing that
differs is how the value is printed, so don't duplicate the rest.

Pure Intersection types (#6799)

Implement pure intersection types RFC

RFC: https://wiki.php.net/rfc/pure-intersection-types

Co-authored-by: Nikita Popov <nikic@php.net>

Pure Intersection types (#6799)

Implement pure intersection types RFC

RFC: https://wiki.php.net/rfc/pure-intersection-types

Co-authored-by: Nikita Popov <nikic@php.net>
Co-authored-by: Ilija Tovilo <ilutov@php.net>

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Merge branch 'PHP-8.0'

* PHP-8.0:
Fixed bug #81208

Fixed bug #81208

The number of populated positional arguments is argc. i may also
include named args and thus try to dtor uninitialized zvals.

Fixed some spaces used instead of tabs

Fix bug #81200 ReflectionMethod::isStatic belongs on ReflectionFunctionAbstract

Remove fiber context embedding

Use 16 instead of 15 bytes of random data in ReflectionReference->getId (#7148)

```
ZEND_BEGIN_MODULE_GLOBALS(reflection)
bool key_initialized;
unsigned char key[

Use 16 instead of 15 bytes of random data in ReflectionReference->getId (#7148)

```
ZEND_BEGIN_MODULE_GLOBALS(reflection)
bool key_initialized;
unsigned char key[REFLECTION_KEY_LEN];
ZEND_END_MODULE_GLOBALS(reflection)
```

This was previously also overwriting key_initialized, which didn't matter at all
because C struct layout is always in order of declaration and the value of
key_initialized was subsequently set to 1.

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Improve fiber interoperability (#7128)