Fixed conversion of empty packed array into hash

Use reference counting instead of zval duplication

Introduced immutable arrays. They don't need to be copyed and may be used directly from SHM.

Use specialized functions instead of macros

Removed useless initializations

Use optimized zend_array_dup() function. convert zend_hash_num_elements() and zend_hash_next_free_element() into macros.

Removed the old hack that was originally developed to support constants in array indeces, and isn't needed anymore after the Bob's patch.

Use new hash iteration API and avoid old zend_hash_update_current_key() hack

Convert to unpacked before deleting elements

Return FAILURE immediately if a string index removal is attempted.

Moved condition higher up

Port JSON

Fixed bug #67169: []= after_array_splice incorrect

This fixes a regression I introduced in beta 1.

Reimplement strtr()

Fix strict array comparison

Fixes Symfony test failures

Combine HashTable.flags and HashTable.nApplyCount into single 32-bit word

Cleanup (1-st round)

Add only_integer_keys option to zend_hash_reindex

This allows to either do a full reindex, or only reindex the integer
keys.

Add zend_hash_splice

This implements the original functionality of php_splice, but
as an in-place operation, thus avoiding copying the HT.

This is much faster (~10x) if the spli

Add zend_hash_splice

This implements the original functionality of php_splice, but
as an in-place operation, thus avoiding copying the HT.

This is much faster (~10x) if the splice removes a small portion
of the array and doesn't insert many elements.

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Add zend_hash_reindex

The implementation differs from the original in array.c in that it
rehashes the hashtable in the same loop. This is approximately two
times faster (not counting

Add zend_hash_reindex

The implementation differs from the original in array.c in that it
rehashes the hashtable in the same loop. This is approximately two
times faster (not counting the rare case of a purely associative
array).

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Refactored zend_hash_* iteration API zend_hash_fove_forward_ex(ht, pos) and family require second argument to be real pointer.
&(ht)->nInternalPointer should be passed instead of NULL.
zend_h

Refactored zend_hash_* iteration API zend_hash_fove_forward_ex(ht, pos) and family require second argument to be real pointer.
&(ht)->nInternalPointer should be passed instead of NULL.
zend_hash_update_current_key() may work only with internal pointer.

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Allocate HashTable->arData and HashTable->arHash at once

"incremental" hash bucket initialization

Refactored ZVAL flags usage to simplify various checks (e.g. Z_REFCOUNTED(), candidate for GC, etc)

Changed data layout to allow more efficient operations

Avoid useless memset()

Use STR_COPY() instead of STR_DUP() where possible