All,

Is there a way to define a function in an extension which would not require a passed in variable to exist? In other words, can ZE be modified to allow extensions to not trigger E_NOTICE warnings if an unset variable is passed to a function which does not care if the var is set?

I can specify preferences about whether variables are passed by reference or not using macros like:

   * PHP_FE(..., first_arg_force_ref)
   * PHP_FE(..., third_arg_force_by_ref_rest)
   * PHP_FE(..., first_through_third_args_force_ref)

Which probably boil down somewhere into:

   * #define ZEND_SEND_BY_VAL     0
   * #define ZEND_SEND_BY_REF     1
   * #define ZEND_SEND_PREFER_REF 2

And I notice that if a variable is passed by reference to an extension function, no E_NOTICE is thrown. Well, can we extend this concept further to say something like:

   * #define ZEND_SEND_WHO_CARES_IF_IT_EXISTS_OR_NOT 4

*but with a better name, of course*

Then, extension developers can write 'ifsetor', 'coalesce', and 'filled' as extensions (by themselves) and not need those specific functions added to the 'PHP core language' per-se.

Dante

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