SQL Result Sets

Perhaps someone out there knows how we can do this.  Thanks in advance
for the help.
We have searched GOOGLE and the archives on the Midrange and RPGIV
sites.  The question appears a few times all the way back to 1998, but
we have not seen an answer posted even though several posts said they
might  try it out.  :>)
 
We want to return two result sets from an RPGIV program.  
We get only the last one back to the calling PHP program.
the RPGIV SQL code to return the result sets is below:

 c/exec SQL                                             
 c+  Set Result Sets Array :TaxDta for :TaxNdx rows     
 c/end-exec                                             
                                                        
 c/exec SQL                                             
 c+  Set Result Sets Array :AssmtDta for :AssmtNdx rows 
 c/end-exec                                             
                                                        
Does anyone know if this should work?  OR do you know of another way to
accomplish the same thing.
 
Any response is appreciated, especially "yes" or "it will never work
and here's why"
 
TIA, 
 
Dave Boettcher