Fix GH-8661: Nullsafe in coalesce triggers undefined variable warning

Closes GH-8690

Add support for readonly classes (#7305)

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

Deprecate ${} string interpolation

https://wiki.php.net/rfc/deprecate_dollar_brace_string_interpolation

Allow internal functions to declare if they support compile-time evaluation, add functions. (#7780)

https://wiki.php.net/rfc/strtolower-ascii means that these functions no longer
depend

Allow internal functions to declare if they support compile-time evaluation, add functions. (#7780)

https://wiki.php.net/rfc/strtolower-ascii means that these functions no longer
depend on the current locale in php 8.2. Before that, this was unsafe to
evaluate at compile time.

Followup to GH-7506

Add strcmp/strcasecmp/strtolower/strtoupper functions

Add bin2hex/hex2bin and related functions

Update test of garbage collection using strtolower to use something else to create a refcounted string

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Avoid useless symbol table reattaching on retutn from an included op_array

Deprecate implicit dynamic properties

Writing to a proprety that hasn't been declared is deprecated,
unless the class uses the #[AllowDynamicProperties] attribute or
defines __get()/

Deprecate implicit dynamic properties

Writing to a proprety that hasn't been declared is deprecated,
unless the class uses the #[AllowDynamicProperties] attribute or
defines __get()/__set().

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

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Encode string offset error reason in extended_value

For FETCH_DIM_W etc encode the context it is being used in
(dim, obj, ref or incdec) so we can throw an appropriate error
message

Encode string offset error reason in extended_value

For FETCH_DIM_W etc encode the context it is being used in
(dim, obj, ref or incdec) so we can throw an appropriate error
message for invalid string offset use, in a way that does not
require inspecting neighboring opcodes. The implementation is
similar to the flags used for FETCH_OBJ.

This means that we do not have to be careful about preserving
following opcodes during optimization.

Closes GH-7599.

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Merge branch 'PHP-8.1'

* PHP-8.1:
JIT: Fixed megamorphic call detection

Merge branch 'PHP-8.0' into PHP-8.1

* PHP-8.0:
JIT: Fixed megamorphic call detection

Avoid non-immutable map_ptr indirection

Support specifying start position in compile_string

Add additional zend_compile_position argument, which can be either
AT_SHEBANG, AT_OPEN_TAG or AFTER_OPEN_TAG. The previous behavior

Support specifying start position in compile_string

Add additional zend_compile_position argument, which can be either
AT_SHEBANG, AT_OPEN_TAG or AFTER_OPEN_TAG. The previous behavior
corresponds to AFTER_OPEN_TAG.

Closes GH-7462.

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Fix delayed early binding with optimization

It's possible for delayed early binding opcodes to get optimized
away if they are "unreachable". However, we still need to attempt
early b

Fix delayed early binding with optimization

It's possible for delayed early binding opcodes to get optimized
away if they are "unreachable". However, we still need to attempt
early binding for them. (In some cases we also corrupt the early
binding list outright during optimization, which is how I got here.)

Fix this by storing information about delayed early binding
independently of DECLARE_CLASS_DELAYED opcodes, so early binding is
performed even after the opcode has been dropped.

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Automatically determine whether to reuse get_iterator()

Same as with the IteratorAggregate case, allow reusing get_iterator
if none of the Iterator methods are overridden. Drop the
R

Automatically determine whether to reuse get_iterator()

Same as with the IteratorAggregate case, allow reusing get_iterator
if none of the Iterator methods are overridden. Drop the
REUSE_GET_ITERATOR flag that previously allowed ArrayIterator to
opt-in to unconditional get_iterator reuse, and drop the override
handling it did, in favor of the automated approach.

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Initialize UNUSED operands to sentinel value

This makes it more likely that unintentional uses of UNUSED
operands will result in crash rather than some hard to detect
corruption of t

Initialize UNUSED operands to sentinel value

This makes it more likely that unintentional uses of UNUSED
operands will result in crash rather than some hard to detect
corruption of the call frame.

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Mark private compiler functions as static

Drop HAS_UNLINKED_USES flag

Instead always use the unlinked_uses table, which is already used
if opcache is used. Not much point in having a different mechanism
for the non-opcache c

Drop HAS_UNLINKED_USES flag

Instead always use the unlinked_uses table, which is already used
if opcache is used. Not much point in having a different mechanism
for the non-opcache case.

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Reuse part of the class binding logic

This part of DECLARE_CLASS and DECLARE_CLASS_DELAYED is the
same.

Don't force property type resolution for include preloading

Having all property types resolved is no longer a hard requirement
for preloading, resolving the types is just an optimization

Don't force property type resolution for include preloading

Having all property types resolved is no longer a hard requirement
for preloading, resolving the types is just an optimization. As
such, drop the special logic that forced loading of property
types when include-based preloading is used. Instead only keep
the code that resolves types based on actually preloaded classes.

Also drop the ZEND_ACC_PROPERTY_TYPES_RESOLVED flag, which is now
nearly useless and takes up flag space...

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Share zval_make_interned_string() helper

The same function was defined in zend_compile.c and zend_API.c.

Remove zend_cleanup_internal_classes()

If fast_shutdown is used, then we don't need to destroy static
members at all. If fast_shutdown is not used, then we already
loop over classes

Remove zend_cleanup_internal_classes()

If fast_shutdown is used, then we don't need to destroy static
members at all. If fast_shutdown is not used, then we already
loop over classes to destroy static members and static variables
in methods.

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Implement readonly properties

Add support for readonly properties, for which only a single
initializing assignment from the declaring scope is allowed.

RFC: https://wiki.php.net

Implement readonly properties

Add support for readonly properties, for which only a single
initializing assignment from the declaring scope is allowed.

RFC: https://wiki.php.net/rfc/readonly_properties_v2

Closes GH-7089.

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Add ZEND_ACC_NOT_SERIALIZABLE flag

This prevents serialization and unserialization of a class and its
children in a way that does not depend on the zend_class_serialize_deny
and zend

Add ZEND_ACC_NOT_SERIALIZABLE flag

This prevents serialization and unserialization of a class and its
children in a way that does not depend on the zend_class_serialize_deny
and zend_class_unserialize_deny handlers that will be going away
in PHP 9 together with the Serializable interface.

In stubs, `@not-serializable` can be used to set this flag.

This patch only uses the new flag for a handful of Zend classes,
converting the remainder is left for later.

Closes GH-7249.
Fixes bug #81111.

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Add limited support for new in initializers

Add support for new expressions inside parameter default values,
static variable initializers, global constant initializers and
attribute

Add limited support for new in initializers

Add support for new expressions inside parameter default values,
static variable initializers, global constant initializers and
attribute arguments.

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

Closes GH-7153.

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Implement "Deprecate implicit non-integer-compatible float to int conversions" RFC. (#6661)

RFC: https://wiki.php.net/rfc/implicit-float-int-deprecate

Co-authored-by: Nikita Popov <

Implement "Deprecate implicit non-integer-compatible float to int conversions" RFC. (#6661)

RFC: https://wiki.php.net/rfc/implicit-float-int-deprecate

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

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Export zend_unary_op_produces_error() and use in optimizer

Don't repeat this logic, as it's going to become more complex.