I\'m quoting part of an answer which I received for another question of mine:
In the PHP/MySQL world I would say stored procedures are no-go
You should also be aware that stored procedures were not supported in Mysql before version 5.0. http://dev.mysql.com/doc/refman/5.0/en/stored-routines.html Also stored procedures tended to be be a bit weird in that implementation. Now that Mysql 5.1 is starting to crop up in the wild I see more use of stored procedures with Mysql.