Automatically implement Stringable interface

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

Add upgrading node regarding fix for bug #79271

Cf. <https://github.com/php/php-src/pull/5180#issuecomment-590259750>ff.

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

Add UPGRADING notes

Not listing the details here, I think the RFC is a better reference
for the precise technical details.

[ci skip]

Add support for $obj::class

This allows $obj::class, which gives the same result as get_class($obj).
Anything other than an object results in TypeError.

RFC: https://wiki.php.ne

Add support for $obj::class

This allows $obj::class, which gives the same result as get_class($obj).
Anything other than an object results in TypeError.

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

Closes GH-5065.

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Make ASSIGN, ASSIGN_OP, INC and DEC opcodes to return IS_TMP_VAR instead of IS_VAR.

This helps to avoid unnecessary IS_REFERENCE checks.
This changes some notices "Only variables should

Make ASSIGN, ASSIGN_OP, INC and DEC opcodes to return IS_TMP_VAR instead of IS_VAR.

This helps to avoid unnecessary IS_REFERENCE checks.
This changes some notices "Only variables should be passed by reference" to exception "Cannot pass parameter %d by reference".

Also, for consistency, compile-time fatal error "Only variables can be passed by reference" was converted to exception "Cannot pass parameter %d by reference"

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Fix #78969 Make PASSWORD_DEFAULT match PASSWORD_BCRYPT instead of being null

It was an unintentional BC break.

Fix typo [ci skip]

Add mention about empty needles for strrch() functions in UPGRADING [ci skip]

Fix bug #64865: Use CONTEXT_DOCUMENT_ROOT for scanning dir tree

If CONTEXT_DOCUMENT_ROOT is set use that rather than DOCUMENT_ROOT to
scan up the dir tree looking for .user.ini files.

Fix bug #64865: Use CONTEXT_DOCUMENT_ROOT for scanning dir tree

If CONTEXT_DOCUMENT_ROOT is set use that rather than DOCUMENT_ROOT to
scan up the dir tree looking for .user.ini files.

Closes GH-5051.

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Allow variadic arguments to replace non-variadic ones

Any number of arguments can be replaced by a variadic one, so
long as the variadic argument is compatible (in the sense of
contr

Allow variadic arguments to replace non-variadic ones

Any number of arguments can be replaced by a variadic one, so
long as the variadic argument is compatible (in the sense of
contravariance) with the subsumed arguments.

In particular this means that function(...$args) becomes a
near-universal signature: It is compatible with any function
signature that does not accept parameters by-reference.

This also fixes bug #70839, which describes a special case.

Closes GH-5059.

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Add UPGRADING notes [skip ci]

Bump required libcurl version to 7.29.0

libcurl 7.29.0 has been released almost eight years ago, so this
version is supposed to be available practically everywhere. This bump
also a

Bump required libcurl version to 7.29.0

libcurl 7.29.0 has been released almost eight years ago, so this
version is supposed to be available practically everywhere. This bump
also allows us to get rid of quite some conditional code and tests
catering to very old libcurl versions.

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Rename run-test.php to run-tests.php in the test packs

In the php-src repository, the test runner is named run-tests.php, but
when it is copied to the tests packs, it is renamed to run-t

Rename run-test.php to run-tests.php in the test packs

In the php-src repository, the test runner is named run-tests.php, but
when it is copied to the tests packs, it is renamed to run-test.php.
This renaming does not make sense, and is actually somewhat confusing.
Although changing the name back to run-tests.php constitutes a BC
break, we think the benefit of having a single name outweights the
disadvantages in the long run.

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Add imagegetinterpolation()

While `imagesetinterpolation()` is available as of PHP 5.5.0,
there is no according getter function, so users would have to track the
current interpolatio

Add imagegetinterpolation()

While `imagesetinterpolation()` is available as of PHP 5.5.0,
there is no according getter function, so users would have to track the
current interpolation method manually.

To remedy this, we introduce `imagegetinterpolation()` as thin wrapper
for `gdImageGetInterpolationMethod()` (which has been introduced with
libgd 2.1.1), and use `im->interpolation_id` as fallback for older
libgd. Since our bundled libgd does not yet have this function, we add
it.

We also simplify the recently introduced bug79068.phpt, where it is
sufficient to check that the interpolation method has not been changed.

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Fixed #78385: Distinguish absent/empty query/fragment

http://example.com/foo => query = null, fragment = null
http://example.com/foo? => query = "", fragment = null
http://examp

Fixed #78385: Distinguish absent/empty query/fragment

http://example.com/foo => query = null, fragment = null
http://example.com/foo? => query = "", fragment = null
http://example.com/foo# => query = null, fragment = ""
http://example.com/foo?# => query = "", fragment = ""

Closes GH-5078.

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[ci skip] Update UPGRADING