With mysqli, we can use mysqli_multi_query to executes one or multiple queries which are concatenated by a semicolon.
mysqli
mysqli_multi_query
Could we do that with phalcon?
phalcon
We don't have support mysqli but you can create one for you
Good luck
Thank you
A bit late: what you can do is integrate the multiple queries in a single store procedure that returns the OUT variable in a "SELECT". Then you just call it as usual from Phalcon.