Add PhpToken class

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

Relative to the RFC, this also adds a __toString() method,
as discussed on list.

Closes GH-5176.

Check abstract method signatures coming from traits

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

Closes GH-5068.

Fix #75958 Return void instead of true

bump zip version

ZipArchive::open(): Using empty file as ZipArchive is deprecated

Revert "Fetch for read in nested property assignments"

This reverts commit bb43a3822e42dbd15b1d416a166549d3980b379a.

After thinking about this a bit more, this is now going to be

Revert "Fetch for read in nested property assignments"

This reverts commit bb43a3822e42dbd15b1d416a166549d3980b379a.

After thinking about this a bit more, this is now going to be
a complete solution for the "readonly properties" case, for example:

unset($foo->readOnly->bar);

should also be legal and

$foo->readOnly['bar'] = 42;

should also be legal if $foo->readOnly is not an array but an
ArrayAccess object.

I think it may be better to distinguish better on the BP_VAR flag
level. Reverting for now.

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bump zp to 1.18.1 + doc

Fetch for read in nested property assignments

$a->b->c = 'd';

is now compiled the same way as

$b = $a->b;
$b->c = 'd';

That is, we perform a read f

Fetch for read in nested property assignments

$a->b->c = 'd';

is now compiled the same way as

$b = $a->b;
$b->c = 'd';

That is, we perform a read fetch on $a->b, rather than a write
fetch.

This is possible, because PHP 8 removed auto-vivification support
for objects, so $a->b->c = 'd' may no longer modify $a->b proper
(i.e. not counting interior mutability of the object).

Closes GH-5250.

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Drop support for iconv without proper errno setting

It is hard to impossible to work around iconv() implementations which
do not properly set errno according to POSIX. We therefore do n

Drop support for iconv without proper errno setting

It is hard to impossible to work around iconv() implementations which
do not properly set errno according to POSIX. We therefore do no
longer allow to build against such iconv() implementations.

Co-Authored-By: Nikita Popov <nikita.ppv@googlemail.com>

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Add str_contains() function

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

Closes GH-5179.

Update Unicode tables to 13.0.0

Require non-absolute trait method refs to be unambiguous

Currently, when writing something like

class X {
use T1, T2 {
func as otherFunc;
}
functi

Require non-absolute trait method refs to be unambiguous

Currently, when writing something like

class X {
use T1, T2 {
func as otherFunc;
}
function func() {}
}

where both T1::func() and T2::func() exist, we will simply assume
that func refers to T1::func(). This is surprising, and it doesn't
really make sense that this particular method gets picked.

This commit validates that non-absolute method references are
unambiguous, i.e. refer to exactly one method. If there is
ambiguity, it is required to write T1::func as otherFunc or
similar.

Closes GH-5232.

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Fix #50678 files extracted by ZipArchive class lost their original modified time

[ci skip] fix for #72374 is no more a BC break

upgrade information about changs in Zip

Automatically implement Stringable interface

Add upgrading note regarding merge of RFC for new DOMParentNode/DOMChildNode APIs.

Add preg_last_error_msg() function

Provides the last PCRE error as a human-readable message, similar
to functionality existing in other extensions, such as
json_last_error_msg().

Add preg_last_error_msg() function

Provides the last PCRE error as a human-readable message, similar
to functionality existing in other extensions, such as
json_last_error_msg().

Closes GH-5185.

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Use serialize_precision for var_dump()

var_dump() is debugging functionality, so it should print
floating-point numbers accurately. We do this by switching
to serialize_precision, wh

Use serialize_precision for var_dump()

var_dump() is debugging functionality, so it should print
floating-point numbers accurately. We do this by switching
to serialize_precision, which (by default) will print with
as much precision as necessary to preserve the exact value
of the float.

This also affects debug_zval_dump().

Closes GH-5172.

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Update UPGRADING

[skip ci]

Deprecate required param after optional

As an exception, we allow "Type $foo = null" to occur before a
required parameter, because this pattern was used as a replacement
for nullable

Deprecate required param after optional

As an exception, we allow "Type $foo = null" to occur before a
required parameter, because this pattern was used as a replacement
for nullable types in PHP versions older than 7.1.

Closes GH-5067.

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Make quoting of cmd execution functions consistent

While the `$command` passed to `proc_open()` had to be wrapped in
double-quotes manually, that was implicitly done for all other
pr

Make quoting of cmd execution functions consistent

While the `$command` passed to `proc_open()` had to be wrapped in
double-quotes manually, that was implicitly done for all other
program execution functions. This could easily introduce bugs and
even security issues when switching from one to another program
execution function.

Furthermore we ensure that the additional quotes are always
unwrapped regardless of what is passed as `$command` by passing
the `/s` flag to cmd.exe. As it was, `shell_exec('path with
spaces/program.exe')` did execute program.exe, but adding an
argument (`shell_exec('path with spaces/program.exe -h)`) failed
to execute program.exe, because cmd.exe stripped the additional
quotes.

While these changes obviously can cause BC breaks, we feel that in
the long run the benefits of having consistent behavior for all
program execution functions outweighs the drawbacks of potentially
breaking some code now.

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Improve generated names for anonymous classes

In order of preference, the generated name will be:

new class extends ParentClass {};
// -> ParentClass@anonymous
n

Improve generated names for anonymous classes

In order of preference, the generated name will be:

new class extends ParentClass {};
// -> ParentClass@anonymous
new class implements FirstInterface, SecondInterface {};
// -> FirstInterface@anonymous
new class {};
// -> class@anonymous

This is intended to display a more useful class name in error messages
and stack traces, and thus make debugging easier.

Closes GH-5153.

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Add static return type

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

The "static" type is represented as MAY_BE_STATIC, rather than
a class type like "self" and "parent", as

Add static return type

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

The "static" type is represented as MAY_BE_STATIC, rather than
a class type like "self" and "parent", as it has special
resolution semantics, and cannot be cached in the runtime cache.

Closes GH-5062.

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[skip ci] Fix typos in UPGRADING

Closes GH-5183