Modifying PHP variables in C

Hi,

I'm porting some PHP code to C, and was hoping that someone can help me.

I have 2 variables $oldarray  and $newarray that both hold arrays and want
to set

  $oldarray = $newarray;

I suppose i have to dispose of $oldarray before i set it to $newarray. I'm
not sure what is the best way, so i did this.

zval **oldarray,*newarray;

zval_add_ref(&newarray);
convert_to_null_ex(oldarray);
*oldarray = newarray;

Would this work? Secondly is there a better way. Thanks again.

John Lim