functions aka stored procedures results and PHP

[Ivan Sergio Borgonovo <mail@xxxxxxxxxxxxxxx>]

Is there a tutorial on how to get back results from PL/pgSQL functions
in PHP?

I've several doubt about memory usage, getting back cursors or
recordsets or single rows or just a value.

What will happen if I have several SELECT in the same PL/pgSQL
function? Will they give back several recordset and how?

thx