[PHP-DEV] Question on return_value

[Bob Silva]

Hi,

 

I have an internal function defined that returns an array zval:

 

zval *pow_zstring_internal_split(Z_STRVAL_P(ivalue), separator, count, 0
TSRMLS_DC);

 

 

 

When I call it like this,  return_value is NULL in userland.

return_value = pow_zstring_internal_split(Z_STRVAL_P(ivalue), separator,
count, 0 TSRMLS_CC);

 

 

But when I call it like this, it works as expected and an array is returned
to userland

array = pow_zstring_internal_split(Z_STRVAL_P(ivalue), separator, count, 0
TSRMLS_CC);

*return_value = *array;

 

 

I'm sure there is an obvious answer, but given my background (or lack
thereof) in C, I can't figure it out.

How does the temporary assignment change things inside the engine?

 

Bob