Fixed memory leak on PDO_FETCH_OBJ.

Fixed zval_ptr_dtor(&return_value) on uninicialized zval

As per PDO meeting on PHP|Tropics fetchSingle is being renamed to
fetchColumn and now supports specification of the column to retrieve.

removed debug code.

fix bug #32795

- Fix null handling found by thies

- Simplify code (only implement handlers that are necessary)
- Fix handling of read only property 'queryString'
- Fix overloading
- Move class init code to their defining .c files for sim

- Simplify code (only implement handlers that are necessary)
- Fix handling of read only property 'queryString'
- Fix overloading
- Move class init code to their defining .c files for simplification
- Mark class PDORow as final until there's a need to inherit this and
someone implements the handlers correct then.

show more ...

- Fix warnings by doing it the Zend way

show list of PDO drivers in phpinfo.
Highlight a possible problem area; iterator leaks when used in foreach(),
at least with sqlite2 driver.

"thou shalt not throw exceptions except in really exceptional circumstances."

The only allowed places to throw them directly are from within the PDO class
constructors or when dealing wi

"thou shalt not throw exceptions except in really exceptional circumstances."

The only allowed places to throw them directly are from within the PDO class
constructors or when dealing with transaction level attributes, where
"hard-failure" is a feature.

All other errors should use the PDO error handling mechanism and respect the
users selected error mode.

show more ...

prep package file for release.
fix my favourite typo.
fix compile warnings

- Update signature

- Need to drop ce until engine gets fixed

- Fix missapplied logic inversion

- Disable direct serializing for PHP 5.0

- Allow default fetch mode to contain fetch flags

- Add some fetch column related capailities
- Add direct (classtype based) unserializing capabilities

- Reorganize ctor_args handling (fixes some bugs)

- Allow to derive PDOStatement
- Verify fetch modes
- Add last fetch mode PDO_FETCH_FUNC (only valid inside fetchAll()) that
allows to completley customize the way data is treated on th

- Allow to derive PDOStatement
- Verify fetch modes
- Add last fetch mode PDO_FETCH_FUNC (only valid inside fetchAll()) that
allows to completley customize the way data is treated on the fly

show more ...

- Add fetch flag PDO_FETCH_CLASSTYPE

- Only call the ctor once

- Fix memleak and optimize PDO_FETCH_CLASS

- Call ctor after initializing the props like regular db exts do

- Need to specify class_entry in PDO_FETCH_CLASS mode

- Add fetch mode PDO_FETCH_UNIQUE