Expose JSON internal function to escape string

Fixed bug #81532

Move php_gcvt to zend_gcvt

Also move PHP_DOUBLE_MAX_LENGTH to ZEND_DOUBLE_MAX_LENGTH.

Merge branch 'PHP-8.0'

* PHP-8.0:
Revert "Fix #79908: json_encode encodes negative zero as int"

Merge branch 'PHP-7.4' into PHP-8.0

* PHP-7.4:
Revert "Fix #79908: json_encode encodes negative zero as int"

Revert "Fix #79908: json_encode encodes negative zero as int"

This reverts commit 717f1ed5e4b4b2083907dd085e66b377edad24b7.

Merge branch 'PHP-8.0'

* PHP-8.0:
Fix #79908: json_encode encodes negative zero as int

Merge branch 'PHP-7.4' into PHP-8.0

* PHP-7.4:
Fix #79908: json_encode encodes negative zero as int

Fix #79908: json_encode encodes negative zero as int

Encoding a negative zero as `-0` is likely to loose the sign when
decoding (at least it does with `json_decode()`). Therefore, we en

Fix #79908: json_encode encodes negative zero as int

Encoding a negative zero as `-0` is likely to loose the sign when
decoding (at least it does with `json_decode()`). Therefore, we encode
it as if `JSON_PRESERVE_ZERO_FRACTION` was specified, i.e. as `-0.0`.

Closes GH-7234.

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Update http->https in license (#6945)

1. Update: http://www.php.net/license/3_01.txt to https, as there is anyway server header "Location:" to https.
2. Update few license 3.0 to 3.01 as

Update http->https in license (#6945)

1. Update: http://www.php.net/license/3_01.txt to https, as there is anyway server header "Location:" to https.
2. Update few license 3.0 to 3.01 as 3.0 states "php 5.1.1, 4.1.1, and earlier".
3. In some license comments is "at through the world-wide-web" while most is without "at", so deleted.
4. fixed indentation in some files before |

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Introduce pseudo-keyword ZEND_FALLTHROUGH

And use it instead of comments

Fix json_encode regression with JSON_PRETTY_PRINT

This makes the json encoding behavior the same as it was prior to the memory
optimizations added in f9f8c1c79cac1b03279190e0c5513a518816

Fix json_encode regression with JSON_PRETTY_PRINT

This makes the json encoding behavior the same as it was prior to the memory
optimizations added in f9f8c1c79cac1b03279190e0c5513a51881615f9
(for objects with declared properties)

This is based on the code for the unoptimized case below the changes.

Buggy output prior to this commit:
```
{
"prop":"value"}
```

Correct output:

```
{
"prop": "value"
}
```

Closes GH-6811

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Implement enums

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

Co-authored-by: Nikita Popov <nikita.ppv@gmail.com>

Closes GH-6489.

Optimized object encoding without rebulding properties HashTable

Add array_is_list(array $array) function

This function tests if an array contains only sequential integer keys. While
list isn't an official type, this usage is consistent with the commu

Add array_is_list(array $array) function

This function tests if an array contains only sequential integer keys. While
list isn't an official type, this usage is consistent with the community usage
of "list" as an annotation type, cf.
https://psalm.dev/docs/annotating_code/type_syntax/array_types/#lists

Rebased and modified version of #4886

- Use .stub.php files
- Add opcache constant evaluation when argument is a constant
- Change from is_list(mixed $value) to array_is_list(array $array)

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

Co-Authored-By: Tyson Andre <tysonandre775@hotmail.com>
Co-Authored-By: Dusk <dusk@woofle.net>

Closes GH-6070

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Add GC_TRY_ADDREF macro

That adds a ref if not immutable. Also audit uses of GC_IMMUTABLE
to either use GC_TRY_ADDREF or GC_TRY_PROTECT_RECURSION.

Remove mention of PHP major version in Copyright headers

Closes GH-4732.

Merge branch 'PHP-7.3' into PHP-7.4

Merge branch 'PHP-7.2' into PHP-7.3

Fixed bug #77843

Optimization for ASCII data

Remove function_table var from the caller

function_table var is not used in call_user_function macro anymore
hence replace the usage with NULL

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

Introduce get_properties_for() handler

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