Implement Fibers

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

Closes GH-6875.

Convert error filename to zend_string

Error handling functions/callbacks now accept the error filename
as a zend_string* instead of a const char*.

Make some exception properties typed

Closes GH-6891

Stop inserting fake frames on VM stack.

Now similar "fake" frames now materialized when fetching debug
backtraces. The patch also fixes few incorrect backtraces for generators
in *.p

Stop inserting fake frames on VM stack.

Now similar "fake" frames now materialized when fetching debug
backtraces. The patch also fixes few incorrect backtraces for generators
in *.phpt tests.

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Merge branch 'PHP-8.0'

* PHP-8.0:
Fix function/file mixup in backtrace printing

Fix function/file mixup in backtrace printing

The error says "Function name" is not a string, but it's actually
investigating the "file" field, not "function".

Closes GH-6768.

Fix spelling and grammar mistakes

This PR corrects misspellings identified by the check-spelling action.

The misspellings have been reported at jsoref@b6ba3e2#commitcomment-48946465

Fix spelling and grammar mistakes

This PR corrects misspellings identified by the check-spelling action.

The misspellings have been reported at jsoref@b6ba3e2#commitcomment-48946465

The action reports that the changes in this PR would make it happy: jsoref@602417c

Closes GH-6822.

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Fix typo

Closes GH-6708

Signed-off-by: George Peter Banyard <girgias@php.net>

Add support for generating class entries from stubs

Closes GH-6289

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

Replace zend_bool uses with bool

We're starting to see a mix between uses of zend_bool and bool.
Replace all usages with the standard bool type everywhere.

Of course, zend_bool

Replace zend_bool uses with bool

We're starting to see a mix between uses of zend_bool and bool.
Replace all usages with the standard bool type everywhere.

Of course, zend_bool is retained as an alias.

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Make convert_to_*_ex simple aliases of convert_to_*

Historically, the _ex variants separated the zval first, if a
conversion was necessary. This distinction no longer makes sense
sin

Make convert_to_*_ex simple aliases of convert_to_*

Historically, the _ex variants separated the zval first, if a
conversion was necessary. This distinction no longer makes sense
since PHP 7.

The only difference that was still left is that _ex checked whether
the type is the same first, but the usage of these macros did not
actually distinguish on whether such an inlined check is valuable
or not in a given context.

Also drop the unused convert_to_explicit_type macros.

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Fix handling of throwing undef var in verify return

If we have an undefined variable and null is not accepted by the
return type, we want to throw just the undef var error.

In t

Fix handling of throwing undef var in verify return

If we have an undefined variable and null is not accepted by the
return type, we want to throw just the undef var error.

In this case this lead to an infinite loop, because we overwrite
the exception opline in SAVE_OPLINE and it does not get reset
when chaining into a previous exception. Add an assertiong to
catch this case earlier.

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Convert exception instanceof checks to assertions

Improve default value handling of Exception constructors

Closes GH-6166

Rename zend_error_notify APIs to zend_observer_error*

Improve type declarations for Zend APIs

Voidification of Zend API which always succeeded
Use bool argument types instead of int for boolean arguments
Use bool return type for functio

Improve type declarations for Zend APIs

Voidification of Zend API which always succeeded
Use bool argument types instead of int for boolean arguments
Use bool return type for functions which return true/false (1/0)
Use zend_result return type for functions which return SUCCESS/FAILURE as they don't follow normal boolean semantics

Closes GH-6002

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Fixed bug #79948

Make sure we don't execute further scripts if one of them encountered
an exit exception.

Also make sure that we free file handles that end up unused due to

Fixed bug #79948

Make sure we don't execute further scripts if one of them encountered
an exit exception.

Also make sure that we free file handles that end up unused due to
an early abort in php_execute_scripts(), which turned up as an
issue in the added test case.

Finally, make use of EG(exit_status) in the places where we
zend_eval_string_ex, instead of unconditionally assigning exit
code 254. If an error occurs, the error handler will already set
exit status 255.

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Accept zend_object* in zend_update_property

Accept zend_object* in zend_unset_property

Accept zend_object* in zend_get_exception_base

Accept zend_object in zend_read_property

Add more argument types to stubs

Closes GH-5943

Implement named parameters

From an engine perspective, named parameters mainly add three
concepts:

* The SEND_* opcodes now accept a CONST op2, which is the
argument nam

Implement named parameters

From an engine perspective, named parameters mainly add three
concepts:

* The SEND_* opcodes now accept a CONST op2, which is the
argument name. For now, it is looked up by linear scan and
runtime cached.
* This may leave UNDEF arguments on the stack. To avoid having
to deal with them in other places, a CHECK_UNDEF_ARGS opcode
is used to either replace them with defaults, or error.
* For variadic functions, EX(extra_named_params) are collected
and need to be freed based on ZEND_CALL_HAS_EXTRA_NAMED_PARAMS.

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

Closes GH-5357.

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[RFC] Make string length for getTraceAsString() configurable

Add a `zend.exception_string_param_max_len` ini setting.
(same suffix as `log_errors_max_len`)

Allow values between

[RFC] Make string length for getTraceAsString() configurable

Add a `zend.exception_string_param_max_len` ini setting.
(same suffix as `log_errors_max_len`)

Allow values between 0 and 1000000 bytes.
For example, with zend.exception_string_param_max_len=0,
"" would represent the empty string, and "..." would represent something
longer than the empty string.
Previously, this was hardcoded as exactly 15 bytes.

Discussion: https://externals.io/message/110717

Closes GH-5769

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Fix warnings of strict-prototypes

Closes GH-5887.