Is there a php equivalent to windows's mbtowcs_s/wcstombs_s?

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Is there a php equivalent to windows's mbtowcs_s/wcstombs_s?


I am writing this c++ desktop app that will write to cloud sql. Also, data saved by it into cloud sql will be accessed via php hosted on appengine. Unfortuately php on appengine does not allow executing compiled c/c++ code.So, please is there any php function that can convert data converted from wide char string to multi byte string in windows back to wide char string in php.

By the way what char set usable in php is equivalent to windows wchar i.e TCHAR when unicode is defined.