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

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)

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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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

Merge branch 'PHP-5.4' into PHP-5.5

* PHP-5.4:
Fixed bug #64529 (Ran out of opcode space)

Conflicts:
NEWS
Zend/zend_execute_API.c
Zend/zend

Merge branch 'PHP-5.4' into PHP-5.5

* PHP-5.4:
Fixed bug #64529 (Ran out of opcode space)

Conflicts:
NEWS
Zend/zend_execute_API.c
Zend/zend_language_scanner.c
Zend/zend_language_scanner_defs.h

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Fixed bug #64529 (Ran out of opcode space)

Fixed bug #61025 (__invoke() visibility not honored)

Class Name Resolution As Scalar Via "class" Keyword

Fixed bug #63980 (object members get trimmed by zero bytes)

Happy New Year

Happy New Year

Merge branch 'PHP-5.4' into PHP-5.5

* PHP-5.4:
Traits refactoring

Traits refactoring

An exception thrown in try or catch block is disacarded by return statement in finally block.

Optimized access to temporary and compiled VM variables

. The VM stacks for passing function arguments and syntaticaly nested calls were merged into a single stack. The stack size needed for op_array execution is calculated at compile time and preallocate

. The VM stacks for passing function arguments and syntaticaly nested calls were merged into a single stack. The stack size needed for op_array execution is calculated at compile time and preallocated at once. As result all the stack push operatins don't require checks for stack overflow any more.
. Generators implementation was improved using the new VM stack. Now it's a bit more clear and faster.

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Improved "finally" im[plementation

Merge branch 'PHP-5.4'

* PHP-5.4:
Fixed bug #62907 (Double free when use traits)

Conflicts:
NEWS

Fixed bug #62907 (Double free when use traits)

Merge branch 'generators'

* generators: (70 commits)
Fix typos
Fix segfault when traversing a by-ref generator twice
Make sure that exception is thrown on rewind() after cl

Merge branch 'generators'

* generators: (70 commits)
Fix typos
Fix segfault when traversing a by-ref generator twice
Make sure that exception is thrown on rewind() after closing too
Remove implementation stubs for yield delegation
Fix several issues and allow rewind only at/before first yield
Run finally if generator is closed before finishing
Finally with return now works in generators too
Add dedicated opcode for returns from a generator
Disallow serialization and unserialization
Fix zts build (typo)
Drop Generator::close() method
Forgot to add test
Support trivial finally in generators (no yield, no return)
Fix implementation of Iterator interface
Add T_YIELD in tokenizer_data.c
Throw error also for return occuring before yield
Fix throwing of exceptions within a generator
Remove reference restrictions from foreach
Require parenthesis around yield expressions
Add some more tests
...

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