Don't track parameter number in separate znode

We already track it in the op array already.

Implement variadic function syntax

As per RFC: https://wiki.php.net/rfc/variadics

fix Zend/tests/ns_040.phpt failing

It was wrongly assumed the namespace has to be looked up in a case
sensitive manner too. Fixed the lookup to use a lower case
represenation of the

fix Zend/tests/ns_040.phpt failing

It was wrongly assumed the namespace has to be looked up in a case
sensitive manner too. Fixed the lookup to use a lower case
represenation of the import name.

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Fix two warnings

Provide more macros for handling of interned strings

* str_erealloc behaves like erealloc for normal strings, but will
use emalloc+memcpy for interned strings.
* str_estrndup be

Provide more macros for handling of interned strings

* str_erealloc behaves like erealloc for normal strings, but will
use emalloc+memcpy for interned strings.
* str_estrndup behaves like estrndup for normal strings, but will
not copy interned strings.
* str_strndup behaves like zend_strndup for normal strings, but
will not copy interned strings.
* str_efree_rel behaves like efree_rel for normal strings, but
will not free interned strings.
* str_hash will return INTERNED_HASH for interned strings and
compute it using zend_hash_func for normal strings.

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Make consistent use of Z_*VAL macros in compiler

Small cleanup in class name resolution of compiler

* The fetch_type and check_ns_name parameters of
zend_resolve_class_name were unused and are now removed.
* ZEND_FETCH_CLASS_G

Small cleanup in class name resolution of compiler

* The fetch_type and check_ns_name parameters of
zend_resolve_class_name were unused and are now removed.
* ZEND_FETCH_CLASS_GLOBAL is no longer used (no code actually
checking for it).
* The checks for usage of "namespace" as class name were
unnecessary as that situation can't occur anyways.

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Fix issue with global fallback not in global space

Handle case sensivity of constants (nikic)

Comment nitpick (nikic)

self and parent are valid function and const names (nikic)

Compile error on const definition conflicting with import

Disallow using functions/consts defined in the same file

* Keep track of defined function and const filenames
* Prohibit use function foo if function foo exists
* Prohibit use const

Disallow using functions/consts defined in the same file

* Keep track of defined function and const filenames
* Prohibit use function foo if function foo exists
* Prohibit use const foo if const foo exists

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Compile error on function definition conflicting with import

Removed assumption that \\ will be present

The function zend_add_ns_func_name_literal is called if the parser finds a function that is not in the global or current namespace. It assumes such

Removed assumption that \\ will be present

The function zend_add_ns_func_name_literal is called if the parser finds a function that is not in the global or current namespace. It assumes such a function will have a \\ in it, which is no longer true with the use function patch. The code change above removes that assumption and makes the test work:
PASS use and use function with the same alias [Zend/tests/use_function/conflicting_use_alias.phpt]

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Import namespaced constants via new 'use const' sequence

Correctly distinguish between functions and constants

So far 'use function' applied to both constants and functions. This
patch correctly separates the two.

Add new 'use function' sequence for importing namespaced functions

This is specified as the use_function RFC:

* https://wiki.php.net/rfc/use_function

non living code related typo fixes

typo fixes

typo fixes

typo fixes

Merge branch 'pull-request/341'

* pull-request/341: (23 commits)
typofixes

Merge branch 'pull-request/341'

* pull-request/341: (23 commits)
typofixes

Fixed bug #64988 (Class loading order affects E_STRICT warning)