Introduce get_properties_for() handler

This handler allows getting the object properties for a particular
purpose, such as array casting, serialization, etc.

Clarify that the get_properties handler is required

Some places were checking for non-null get_properties, some weren't.
Make it clear that the handler is required and such checks are no

Clarify that the get_properties handler is required

Some places were checking for non-null get_properties, some weren't.
Make it clear that the handler is required and such checks are not
necessary.

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Fix #76820: Z_COPYABLE invalid definition

We remove the extraneous parenthesis.

Pack zend_constant.flags and zend_constant.module_number into reserved space inside zend_constant.value.

Remove unused Git attributes ident

The $Id$ keywords were used in Subversion where they can be substituted
with filename, last revision number change, last changed date, and last
use

Remove unused Git attributes ident

The $Id$ keywords were used in Subversion where they can be substituted
with filename, last revision number change, last changed date, and last
user who changed it.

In Git this functionality is different and can be done with Git attribute
ident. These need to be defined manually for each file in the
.gitattributes file and are afterwards replaced with 40-character
hexadecimal blob object name which is based only on the particular file
contents.

This patch simplifies handling of $Id$ keywords by removing them since
they are not used anymore.

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Fix build with ZEND_RC_DEBUG

Fixed bug #76509

In PHP static properties are shared between inheriting classes,
unless they are explicitly overwritten. However, because this
functionality was implemented using ref

Fixed bug #76509

In PHP static properties are shared between inheriting classes,
unless they are explicitly overwritten. However, because this
functionality was implemented using reference, it was possible
to break the implementation by reassigning the static property
reference.

This is fixed by switching the implementation from using references
to using INDIRECTs, which cannot be affected by userland code.

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Use COPY_DEREF instead of COPY_UNREF

This fixes the behavior when the storage location of the fetch is
modified before the operand is dereferenced by the using VM opcode.

Furthe

Use COPY_DEREF instead of COPY_UNREF

This fixes the behavior when the storage location of the fetch is
modified before the operand is dereferenced by the using VM opcode.

Furthermore it elimiates references as a possible return value from
*_R opcodes, which will give us more opportunities for inferences,
in particular in regard to typed properties.

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Fix the Z_IMMUTABLE macro - '(' was mismatched

The macro properly has two matching `(` and `)` symbols
after this change.

This typo was causing syntax errors when compiling exte

Fix the Z_IMMUTABLE macro - '(' was mismatched

The macro properly has two matching `(` and `)` symbols
after this change.

This typo was causing syntax errors when compiling extensions
using the (deprecated) macro.

This fixes a bug in the PHP 7.3 branch introduced by
742d5a01ed5bd39a18929c04a5f5c5596a4b005b

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Use SSE2 instruction to reset HashTable

Changed worst HashTable load factor from 1.0 to 0.5

Implemented Request #76178 (Class constants are slow: they should be inlined at runtime)

Run-time cache is used to eliminate recalculation of constant expression in RECV_INIT opcode (only no

Implemented Request #76178 (Class constants are slow: they should be inlined at runtime)

Run-time cache is used to eliminate recalculation of constant expression in RECV_INIT opcode (only non reference countable values are cached).

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Simplify GC_FLAGS cand CG_INFO checks

Change CG_TYPE_INFO() layout to provide more room for GC_INFO()

Use macros to update specific parts of GC_TYPE_INFO() (direct assignments to GC_TYPE(), GC_FLAGS() and GC_INFO() are prohibited)

Completely hide GC implementation details into zend_gc.c

Get rid of IS_OBJ_USE_GUARDS and IS_OBJ_HAS_GUARDS flags

Simplify REFCOUNTED checks

Use Z_TYPE_INFO_REFCOUNTED() macro

Moved "zval.u2.cache_slot" into free room of "zend_op"

Break dependency between IS_TYPE_REFCOUNTED and ZEND_CALL_FREE_EXTRA_ARGS

Access extra data stored in zval through macros

Use OBJ_FLAGS() macro to access object flags (even if they are currently stored together with GC_FLAGS)

Merge HashTable.u.v.consistency into HashTable.u.v.flags

Get rid of IS_TYPE_COPYABLE.