Merge branch 'PHP-7.4'

* PHP-7.4:
Fix bug #67369 ArrayObject serializatino drops the iterator class

Fix bug #67369 ArrayObject serializatino drops the iterator class

When ArrayObject is round-tripped through serialize() and unserialize(),
it forgets any iterator class name which was se

Fix bug #67369 ArrayObject serializatino drops the iterator class

When ArrayObject is round-tripped through serialize() and unserialize(),
it forgets any iterator class name which was set using ::setIteratorClass().
Fix that.

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Merge branch 'PHP-7.4'

* PHP-7.4:
Fix #69264: __debugInfo() ignored while extending SPL classes

Fix #69264: __debugInfo() ignored while extending SPL classes

We actually implement `::__debugInfo()` and drop the `get_debug_info()`
handlers of all relevant SPL classes. This is clean

Fix #69264: __debugInfo() ignored while extending SPL classes

We actually implement `::__debugInfo()` and drop the `get_debug_info()`
handlers of all relevant SPL classes. This is cleaner and gives more
flexibility regarding overriding the functionality in descendant
classes.

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Add some stubs for SPL

Closes GH-5245

Use zend_parse_parameters_none() instead of zend_parse_parameters_none_throw()

Use RETURN_THROWS() after zend_throw_exception() in most of the extensions

Use RETURN_THROWS() during ZPP in the remaining extensions

In reflection, sodium, and SPL

Fix consistency issues with array accesses warnings/exceptions

* Change a number of "resource used as offset" notices to warnings,
which were previously missed.
* Throw the "res

Fix consistency issues with array accesses warnings/exceptions

* Change a number of "resource used as offset" notices to warnings,
which were previously missed.
* Throw the "resource used as offset" warning for isset() as well.
* Make array_key_exists() behavior with regard to different key
types consistent with isset() and normal array accesses. All key
types now use the usual coercions and array/object keys throw
TypeError.

Closes GH-4887.

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Remove support for array_key_exists() with objects

zend_parse_parameters_throw() is obsolete

Since `zend_parse_parameters()` throws now, there is no reason to
explicitly call `zend_parse_parameters_throw()` anymore, and since both
ha

zend_parse_parameters_throw() is obsolete

Since `zend_parse_parameters()` throws now, there is no reason to
explicitly call `zend_parse_parameters_throw()` anymore, and since both
have actually the same implementation, we redefine the latter as macro.

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Comparison cleanup:

- introduce zend_compare() that returns -1,0,1 dirctly (without intermediate zval)
- remove compare_objects() object handler, and keep only compare() handler

Remove mention of PHP major version in Copyright headers

Closes GH-4732.

Merge branch 'PHP-7.4'

Fixed bug #78409

This removes an incorrect optimization (I think this code used to be
necessary to properly handle references in the Serializable based
implementation, but now this c

Fixed bug #78409

This removes an incorrect optimization (I think this code used to be
necessary to properly handle references in the Serializable based
implementation, but now this code just avoids an array duplication
in a way that is not sound).

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Merge branch 'PHP-7.4'

* PHP-7.4:
Replace ZVAL_COPY() and ZVAL_COPY_VALUE() for IS_OBJECT by cheaper macros

Replace ZVAL_COPY() and ZVAL_COPY_VALUE() for IS_OBJECT by cheaper macros

Merge branch 'PHP-7.4'

Fixed some arg infos to match documentation

Merge branch 'PHP-7.4'

Correctly destroy reference in ArrayObject sort

The reference may be captured in an exception backtrace, in which
case the refcount may be more than one.

Merge branch 'PHP-7.4'

Fix bug #77866: Port Serializable SPL classes to use __unserialize()

Payloads created using Serializable are still supported.

Merge branch 'PHP-7.4'

Fixed bug #77633

Add a new class flag to inherit get_iterator() when implementing
the Iterator/IteratorAggregate interfaces and use it for
ArrayIterator.