Add the --generate-optimizer-info option to the help of gen_stub.php

Fix generation of property with class union type

The generated type was missing the UNION bit. Add a ZEND_TYPE_INIT_UNION
macro to hide the implementation details.

Update PHP-Parser version in gen_stub

This should address the octal issue encountered in #7610.

Fix a few more classsynopsis generation issues

Closes GH-7480

Change gen-stub.php to gen_stub.php in help text

Fix documentation generation when legacy arginfo is generated

When legacy arginfo is generated, all the type info gets lost. Since this task is performed before any other additional function

Fix documentation generation when legacy arginfo is generated

When legacy arginfo is generated, all the type info gets lost. Since this task is performed before any other additional functionalities of gen_stub.php (e.g. verification, method synopsis and class synopsis generation), these fail as they would require the missing type information.

The issue is fixed by deep cloning the file info objects (albeit only their affected properties), so that we use those for legacy arginfo generation, leaving the original ones untouched.

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Fix class synopsis generation for interfaces

We have to generate <ooclass> elements for interfaces (rather than <oointerface>) in a number of places: directly inside the <classsynopsis> elem

Fix class synopsis generation for interfaces

We have to generate <ooclass> elements for interfaces (rather than <oointerface>) in a number of places: directly inside the <classsynopsis> element and in the extends list.

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Improve class synopsis root element generation

Besides classrefs, we also have exceptionrefs. Also, the 4th capture group replacement used to be unintentionally duplicated.

Properly escape the default value of string properties and enum cases

Remove unused variable from property generation code

Fix typo in method name in gen_stub.php

Support generating internal enum decl from stubs

Fix nested namespaced typed property in gen_stub.php (#7418)

Property escape namespaced class name in property types.

Minor cleanup in gen_stubs

Unshare the stmt flag handling code, as this does not always
generalize (e.g. to enum cases, which have no visibility or flags
at all).

Fix type hint in gen_stub.php

There is no ClassType class, only SimpleType.

[ci skip]

Fix typo in gen_stub.php

Generate optimizer func info from stubs for ext/standard - part 3 (#7426)

Add support for generating MAY_BE_ARRAY_OF_REF func info flag (#7416)

Ensure stub files are processed in predictable order

The zend_func_infos.h file was generated in a different order for
me.

Use &Properties; entity in xpointer for inherited properties in class synopses (#7400)

This changes ClassInfo::createIncludeElement() such that it takes the $query
argument as-is for the

Use &Properties; entity in xpointer for inherited properties in class synopses (#7400)

This changes ClassInfo::createIncludeElement() such that it takes the $query
argument as-is for the xpointer attribute value. Special characters, like
" and &, are used as-is so be careful not to break the resulting XML.

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Fix callable and iterable handling

Clean up function map production slightly

There's no need to iterate over $fileInfos again while generating the class map

Fix function map production

Add more specific array type hints

Add support for generating optimizer function info from stubs (#7367)