Fixed is_callable/call_user_func mess that had done different things for very similar arguments e.g. array("A","B") and "A::B"

Fixed bug #45178 (memory corruption on assignment result of "new" by reference)

LSB parent/self forwarding

Fixed is_callable() to support closures and return appropriate function name

Added support for lambda functions and closures

- Removed direct executor recursion.
- Use fastcall calling convention in executor on x86.

- Fixed bug #45089 (__callStatic $name case sensitivity)

MFH: small CSE optimizations

Fixed bug #44952 (isset() does not checks correctly variable variable)

Use IS_CV for dirrent access to $this variable

Fixed possible memory leak

Regenerate zend_vm_execute.h

- Use ZEND_FREE() opcode instead of ZEND_SWITCH_FREE(IS_TMP_VAR)
- Fixed bug #44913 (Segfault when using return in combination with nested loops
and continue 2)

IS_CONST operands are always have is_ref==1 and refcount==2, so we can eliminate unnecessary checks at specialization/compilation stage

Lazy EG(active_symbol_table) initialization

Optimized handlers for ZEND_RECV and ZEND_RECV_INIT opocdes

Optimized function call helper

Optimized ZEND_RETURN opcode to not allocate and copy return value if it is not
used.

MFH: Implemented "jump label" operator (limited "goto")
[DOC]

MFH: Dropped zend.ze1_compatibility_mode
[DOC]

Implemented concept of "delayed early binding" that allows opcode caches to perform class declaration (early and/or run-time binding) in exactly the same order as vanila php.
The following pseudo

Implemented concept of "delayed early binding" that allows opcode caches to perform class declaration (early and/or run-time binding) in exactly the same order as vanila php.
The following pseudo-code explains how it should be used in opcode cache.

function cache_compile_file($filename) {
if (!is_cached($filename)) {
...
orig_compiler_options = CG(compiler_optins);
CG(compiler_options) |= ZEND_COMPILE_IGNORE_INTERNAL_CLASSES |
ZEND_COMPILE_DELAYED_BINDING;
$op_array = orig_compile_file($filename);
CG(compiler_options) = orig_copiler_options;
...
} else {
$op_array = restore_from_cache($filename);
}
zend_do_delayed_early_binding($op_array);
}

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- Rewrite scanner to be based on re2c instead of flex
The full patch is available as:
http://php.net/~helly/php-re2c-5.3-20080316.diff.txt
This is against php-re2c repository versio

- Rewrite scanner to be based on re2c instead of flex
The full patch is available as:
http://php.net/~helly/php-re2c-5.3-20080316.diff.txt
This is against php-re2c repository version 98
An older patch against version 97 is available under:
http://php.net/~helly/php-re2c-97-20080316.diff.txt

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Optimized ZEND_FETCH_CLASS + ZEND_ADD_INTERFACE into single ZEND_ADD_INTERFACE opcode

Optimized require_once() and include_once() by eliminationg open() syscall on second usage.

Fixed shared memory corruption of opcode caches