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

Use RETURN_THROWS() during ZPP in most of the extensions

Except for some bigger ones: reflection, sodium, spl

Add stubs for PDO

Make zend_type a 2-field struct

We now store the pointer payload and the type mask separately. This
is in preparation for union types, where we will be using both at
the same time.

Make zend_type a 2-field struct

We now store the pointer payload and the type mask separately. This
is in preparation for union types, where we will be using both at
the same time.

To avoid increasing the size of arginfo structures, the
pass_by_reference and is_variadic fields are now stored as part of
the type_mask (8-bit are reserved for custom use).

Different types of pointer payloads are distinguished based on bits
in the type_mask.

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Cleanup return values when parameter parsing is unsuccessful

Add Z_PARAM_STRING/ARRAY_OR_NULL convenience macros

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 most uses of ZEND_PARSE_PARAMETERS_END_EX()

As ZPP now throws, it makes no sense to specify an explicit return
value.

Remove mention of PHP major version in Copyright headers

Closes GH-4732.

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'

* PHP-7.4:
Fix bug #77849 Disable cloning of PDO handle/connection objects to avoid segfault

Merge branch 'PHP-7.3' into PHP-7.4

* PHP-7.3:
Fix bug #77849 Disable cloning of PDO handle/connection objects to avoid segfault

Merge branch 'PHP-7.2' into PHP-7.3

* PHP-7.2:
Fix bug #77849 Disable cloning of PDO handle/connection objects to avoid segfault

Fix bug #77849 Disable cloning of PDO handle/connection objects to avoid segfault

Make zpp failures always throw, independent of strict_types

Previously zend_parse_parameters (and FastZPP) would handle invalid
arguments depending on strict_types: With strict_types=1,

Make zpp failures always throw, independent of strict_types

Previously zend_parse_parameters (and FastZPP) would handle invalid
arguments depending on strict_types: With strict_types=1, a TypeError
is thrown, with strict_types=0 a warning is thrown and (usually) NULL
is returned. Additionally, some functions (constructors always and
other methods sometimes) opt-it to throwing regardless of strict_types.

This commit changes zpp to always generate a TypeError exception in
PHP 8.

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Refactor zend_object_handlers API to pass zend_object* and zend_string* insted of zval(s).

Remove local variables

This patch removes the so called local variables defined per
file basis for certain editors to properly show tab width, and
similar settings. These are mainly

Remove local variables

This patch removes the so called local variables defined per
file basis for certain editors to properly show tab width, and
similar settings. These are mainly used by Vim and Emacs editors
yet with recent changes the once working definitions don't work
anymore in Vim without custom plugins or additional configuration.
Neither are these settings synced across the PHP code base.

A simpler and better approach is EditorConfig and fixing code
using some code style fixing tools in the future instead.

This patch also removes the so called modelines for Vim. Modelines
allow Vim editor specifically to set some editor configuration such as
syntax highlighting, indentation style and tab width to be set in the
first line or the last 5 lines per file basis. Since the php test
files have syntax highlighting already set in most editors properly and
EditorConfig takes care of the indentation settings, this patch removes
these as well for the Vim 6.0 and newer versions.

With the removal of local variables for certain editors such as
Emacs and Vim, the footer is also probably not needed anymore when
creating extensions using ext_skel.php script.

Additionally, Vim modelines for setting php syntax and some editor
settings has been removed from some *.phpt files. All these are
mostly not relevant for phpt files neither work properly in the
middle of the file.

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Remove yearly range from copyright notice

Merge branch 'PHP-7.3'

Merge branch 'PHP-7.2' into PHP-7.3

Fixed bug #77273

Switch PDO to use serialize_deny

And remove dummy __sleep/__wakeup. This switches the thrown
exception type from PDOException to Exception.

Use ZEND_THIS macro to hide implementation details in extensions code.

Replace getThis() by EX(This), when additional check is not necessary.