Enable throwing custom exceptions from errors

Use ZSTR_ API to access zend_string elements (this is just renaming without semantick changes).

Fix more minor mistakes in the proto comments

Fix bad run_time_cache with Closure::call()
This also fixes a memory "leak" (memory is allocated on unbounded arena without limits) on each new Closure instantiation.
Closures with same scope

Fix bad run_time_cache with Closure::call()
This also fixes a memory "leak" (memory is allocated on unbounded arena without limits) on each new Closure instantiation.
Closures with same scope now all share the same run_time_cache (as long as it is arena allocated)

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Fixed bug #69802 (Reflection on Closure::__invoke borks type hint class name) (onr more problem)

Complete fix for problems related to bug #69802

Merge branch 'PHP-5.6'

Preserving HAS_RETURN_TYPE for __invoke() here as well.

Conflicts:
Zend/zend_alloc.c

Preserve VARIADIC flag for Closure::__invoke()

The 13 arguments are for the benefit of PHP 7, where the first
twelve use the bitmask.

Ban rebinding closures to different internal classes

Don't implicitly make closures in static methods static

It makes no sense that you can't write a closure using $this in a
static method, even though you can write one outside a class.

Don't implicitly make closures in static methods static

It makes no sense that you can't write a closure using $this in a
static method, even though you can write one outside a class.

Now only closures that have been marked as static will be considered
to be static.

Fixes bug #65598.

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Fix LSB handling for closures

Closures will now use the called_scope from their instantiation
site. If they are rebound either the class of $this is used or if
no $this is provided t

Fix LSB handling for closures

Closures will now use the called_scope from their instantiation
site. If they are rebound either the class of $this is used or if
no $this is provided the bound scope is used.

With this change the scope for static closures can be changed back
to use EG(scope) rather than EX(called_scope), thus fixing
bug #69568.

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Cleanup comments and add related tests.

Use temporary debug_info for closures

We don't need this protection anymore (now reference counting on closures is accurate).

Use zend_error_noreturn() for fatal errors

More accurate reference counting on closures

Errors converted to exceptions are not "recoverable" anymore.

Implement engine exceptions

RFC: https://wiki.php.net/rfc/engine_exceptions_for_php7

Pending changes regarding naming of BaseException and whether it
should be an interface.

Only do this in debug build

Fixed mem issue with internal return type hinting assert

don't count op_arrays stored in opcache SHM

Merged zend_array and HashTable into the single data structure.
Now each HashTable is also zend_array, so it's refcounted and may be a subject for Copy on Write
zend_array_dup() was changed t

Merged zend_array and HashTable into the single data structure.
Now each HashTable is also zend_array, so it's refcounted and may be a subject for Copy on Write
zend_array_dup() was changed to allocate and return HashTable, instead of taking preallocated HashTable as argument.

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Merge branch 'PHP-5.5' into PHP-5.6

* PHP-5.5:
Added test and possible fix for https://bugs.php.net/bug.php?id=67068

Added test and possible fix for https://bugs.php.net/bug.php?id=67068

Merge branch 'pull-request/994'

* pull-request/994:
Added test and possible fix for https://bugs.php.net/bug.php?id=67068