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 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

Adding DateTime(Immutable)::createFromInterface()

These are like

DateTime::createFromImmutable()
DateTimeImmutable::createFromMutable()

but accept any DateTimeI

Adding DateTime(Immutable)::createFromInterface()

These are like

DateTime::createFromImmutable()
DateTimeImmutable::createFromMutable()

but accept any DateTimeInterface instead.

Closes GH-5016.

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Implement WeakMap

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

Add FILTER_VALIDATE_BOOL as alias for FILTER_VALIDATE_BOOLEAN

Both filters are equivalent, but FILTER_VALIDATE_BOOL uses our
canonical name for the type (the only one permitted in type

Add FILTER_VALIDATE_BOOL as alias for FILTER_VALIDATE_BOOLEAN

Both filters are equivalent, but FILTER_VALIDATE_BOOL uses our
canonical name for the type (the only one permitted in type
declarations for example), so the new name is preferred long
term.

The old name may be deprecated in the future, but no specific
timeline is planned.

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Add setAuthorizer method to SQLite3

This adds the possibility to define a userland callback that will be
used to authorize or not an action on the database.

Add upgrading note about implode() [ci skip]

Remove deprecated behaviour of passing encoding as third parameter in mb_strrpos()

Merged GH-5011

Add upgrading notes about removed functionality that were deprecated in PHP 7.4

Make the $num_points parameter of php_imagepolygon optional

That parameter is mostly useless in practise, and likely has been
directly ported from the underlying `gdImagePolygon()` and f

Make the $num_points parameter of php_imagepolygon optional

That parameter is mostly useless in practise, and likely has been
directly ported from the underlying `gdImagePolygon()` and friends,
which require that parameter since the number of elements of the point
array would otherwise be unknown. Typical usages of `imagepolygon()`,
`imageopenpolygon()` and `imagefilledpolygon()` pass `count($points)/2`
or hard-code this value as literal. Since explicitly specifying this
parameter is annoying and error-prone, we offer the possibility to omit
it, in which case the `$points` array must have an even number of
elements, and the number of points is calculated as `count($points)/2`.

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Implement union types

According to RFC: https://wiki.php.net/rfc/union_types_v2

The type representation now makes use of both the pointer payload
and the type mask at the same t

Implement union types

According to RFC: https://wiki.php.net/rfc/union_types_v2

The type representation now makes use of both the pointer payload
and the type mask at the same time. Additionall, zend_type_list is
introduced as a new kind of pointer payload, which is used to store
multiple class types. Each of the class types is a tagged pointer,
which may be either a class name or class entry. The latter is only
used for typed properties, while arguments/returns will instead use
cache slots. A type list can contain a mix of both names and CEs at
the same time, as not all classes may be resolvable.

One thing this is missing is support for union types in arginfo
and stubs, which I want to handle separately.

I've also dropped the special object code from the JIT implementation
for now -- I plan to add this back in a different form at a later time.
For now I did not want to include non-trivial JIT changes together
with large functional changes.

Another possible piece of follow-up work is to implement "iterable"
as an internal alias for "array|Traversable". I believe this will
eliminate quite a few special-cases that had to be implemented.

Closes GH-4838.

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Remove support for array_key_exists() with objects

Update documentation/comment for GH-4860

Fix folding for the new helper method.

Clarify comment in UPGRADING:
The performance on associative arrays would also improve,
as lo

Update documentation/comment for GH-4860

Fix folding for the new helper method.

Clarify comment in UPGRADING:
The performance on associative arrays would also improve,
as long as no offsets were unset (no gaps).
Packed arrays can have gaps.

Closes GH-4873.
[ci skip]

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Remove ability to unbind $this of closures if used

This was deprecated in PHP 7.4, removing it for PHP 8.0.