restore correct behavior of DateTime

Fix regression introduce in fix for bug #67118

The fix was correct but break some code (at least in Horde)
This is a temporary workaround to fix regressioni in 5.4, 5.5 and 5.6

Fix regression introduce in fix for bug #67118

The fix was correct but break some code (at least in Horde)
This is a temporary workaround to fix regressioni in 5.4, 5.5 and 5.6

This make php_date_initialize more consistent
- on success return 1 + time initiliazed
- on failure return 0 + time = zero
which is check by DATE_CHECK_INITIALIZED by later method call

Will restore consistency with other date classes in master.

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Avoid in-place conversion

Add microseconds to the serialised form of DateTime objects.

Fixes bug #67308 (Serialize of DateTime truncates fractions of second).

fix build

Split IS_BOOL into IS_FALSE and IS_TRUE

Align zval_get_long/double with zval_get_string

Fixed bug #67118 DateTime constructor crash with invalid data

Fixed compilation warnings

Moved zend_literal->cache_slot right into zval.
It should be accessed using Z_CACHE_SLOT() macro.
zend_literal structure is removed.
API functions that accepted pointer to zend_literal no

Moved zend_literal->cache_slot right into zval.
It should be accessed using Z_CACHE_SLOT() macro.
zend_literal structure is removed.
API functions that accepted pointer to zend_literal now accept pointer to zval or cache_slot directly.
Calls of such functiond that now accept cache_slot need to be changed to pass -1 instead of NULL.

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Reduced memory realocations

Add functions for extracting long/double/string from zval

These function get the long / double / string value of a zval with
usual cast semantics, but without actually modifying the zval

Add functions for extracting long/double/string from zval

These function get the long / double / string value of a zval with
usual cast semantics, but without actually modifying the zval.

Didn't go on a killing spree for convert_to_* yet...

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Cleanup (2-nd round)

Cleanup (1-st round)

Fix bug #66721

Add NULL check to php_date_parse_tzfile's retval

Fix ZTS build

This only makes it compile, it doesn't actually work, presumably
because interned strings are assumed in some places.

Fixed destruction of objects and iterators on unclean request shutdown and GC (few cases are still unfixed).
Now we destroy objects it two steps. At first - object properties of all objects and o

Fixed destruction of objects and iterators on unclean request shutdown and GC (few cases are still unfixed).
Now we destroy objects it two steps. At first - object properties of all objects and only then the objects their selves.

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

Changed data layout to allow more efficient operations

Refactored data structures to keep zend_object* instead of a whole zval in some places

don't keep useless objects till the end of the script (destroy them immediately)

Refactored GC (incomplete)

Fixed memory leak while cloning (All tests passes now in ext/date)

Refactor date to fixed bug after default_properties changed

Temporary fix memory leaks