How to call a stored procedure

[Christopher Mihaly]

 Okay, this is probably a basic question, but I can't find it.  How do you 
call a stored procedure in Informix.  The stored procedures I want to call 
don't return anything, and take zero to two parameters?  I have tried to do  
a $db->do("execute STOREPROC($arg)") and that gives back a syntax error, 
tried leaving the execute off and that errored.  Help would be appreciated 
:-)
  Thanks
     Chris

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