Merge branch 'PHP-7.2'

* PHP-7.2:
Don't optimize input arrays with suffix holes

Don't optimize input arrays with suffix holes

array_slice() passthrough for preserve_keys=true as well

Do not create a new array when slicing all of input array.

Encapsulate reference-counting primitives.
Prohibit direct update of GC_REFCOUNT(), GC_SET_REFCOUNT(), GC_ADDREF() and GC_DELREF() shoukf be instead.
Added mactros to validate reference-count

Encapsulate reference-counting primitives.
Prohibit direct update of GC_REFCOUNT(), GC_SET_REFCOUNT(), GC_ADDREF() and GC_DELREF() shoukf be instead.
Added mactros to validate reference-counting (disabled for now).
These macros are going to be used to eliminate race-condintions during reference-counting on data shared between threads.

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Avoid HashTable allocations for empty arrays (using zend_empty_array).

Fix datatypes and compiler warnings

Switch to size_t

Not critical as an unsigned is already used, but fixes a couple of
warnings in other areas.

Normalize signature

Fix datatypes and compiler warnings

Switch to size_t

Not critical as an unsigned is already used, but fixes a couple of
warnings in other areas.

Normalize signature

It's a function with the usual compare semantics, returning a platform
specific at least produces unnecessary warnings elsewhere and is otherwise
inappropriate.

Fix return value

Drop unused var

Fix compiler warnings

Fix compiler warning

Fix var name in arginfo

Fix cast

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HASH_FLAG_PERSISTENT renamed into IS_ARRAY_PERSISTENT and moved into GC_FLAGS (to be consistent with IS_STR_PERSISTENT).

Refactored recursion pretection

Fix typo retuns to returns

Kill compiler warnings in ext/standard

Optimize array_unique()

In SORT_STRING mode, instead of sorting the array, build a hash of
seen elements.

Use inlined version of zval_ptr_dtor() in array_map() loop

Remove superfluous semicolons

Avoid useless dereferences and separations during paramter passing.

Improved new Zend Parameter Parsing API to avoid useless dereferences.
This derefernce made sense only for explicit paramter passing by reference, but this feature was removed in PHP-7.
The i

Improved new Zend Parameter Parsing API to avoid useless dereferences.
This derefernce made sense only for explicit paramter passing by reference, but this feature was removed in PHP-7.
The improvement is 100% backward compatible, only few "tricky" functions may be affected (e.g. extract and usort).

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"Countable" interface is moved from SPL to Core

Use interned empty and "one char" strings.

Removed useless dereferences

Merge branch 'PHP-7.1'

Fixed bug #74361

Remove more unnecessary checks on Zend's allocator functions

Remove unnecesary shadow of new_val

Minor optimizations to array_keys()/array_values()

array_values():
When the input is an empty array or a packed array with no gaps,
return the original array.

array_keys():

Minor optimizations to array_keys()/array_values()

array_values():
When the input is an empty array or a packed array with no gaps,
return the original array.

array_keys():
When the input is an empty array, return the original array.
When the input is a packed array with no holes
(and no search key specified), populate the return with
a simple range(0, count($input) - 1)

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Interned strings unification for TS/NTS

Hereby, interned strings are supported in thread safe PHP. The patch
implements two types of interned strings

- interning per process, st

Interned strings unification for TS/NTS

Hereby, interned strings are supported in thread safe PHP. The patch
implements two types of interned strings

- interning per process, strings are not freed till process end
- interning per request, strings are freed at request end

There is no runtime interning.

With Opcache, all the permanent iterned strings are copied into SHM on
startup, additional copying into SHM might happen on demand.

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