I'm working on a data serialization routine wherein I must iterate through an object's properties while distinguishing between "sealed" properties (i.e., those specified by class definitions) and "dynamic" properties" (i.e., those assigned ad-hoc to some object that are not party of any class definition).
I found the source of the php function get_object_vars(): http://lxr.php.net/xref/PHP_5_6/Zend/zend_builtin_functions.c#985 However, I am still pretty confused. PHP source is *full* of macros and has basically no comments. Hoping for some tips to keep me on the right track. I'm pretty sure I can get something kludgy working, but I want my code to be orthodox and work well. QUESTIONS 1) Sadly, this approach is unable to distinguish "sealed" properties from dynamic ones. If anyone can refer me to some source (or outline a general approach) which can first iterate sealed properties and then iterate only dynamic ones, that would be extremely helpful. 2) What does zend_objects_get_address do? This reference looks very different than the usual macro, e.g. Z_OBJ_HT_P 3) Am I correct in understanding that zend_check_property_access simply checks if the property in question is availabe in the scope in which this function call gets executed? Is this the canonical/orthodox way to make this check? 4) What does zend_unmangle_property_name do? Why is this function changed to zend_unmangle_property_name_ex in 5.5 and later? 5) Why do we call Z_ADDREF_PP(value) here? Is this reference counting to prevent garbage collection? 6) An IS_INTERNED check is added in php 5.6 and yet the macro for IS_INTERNED is zero. What's that all about? 7) The code looks quite different between the different versions: 5.3 - http://lxr.php.net/xref/PHP_5_3/Zend/zend_builtin_functions.c#950 5.5 - http://lxr.php.net/xref/PHP_5_5/Zend/zend_builtin_functions.c#982 5.6 - http://lxr.php.net/xref/PHP_5_6/Zend/zend_builtin_functions.c#985 >From what I can tell there is at least one difference between 5.3 and 5.6 -- zend_unmangle_property_name_ex does not exist before 5.5. Can anyone recommend how to make code that'll work in 5.3-5.6? Also, with 7 coming out I'd like it work there too. Any answers or assistance would be greatly appreciated.
