Are there error or Status Codes???

[Albert Whale]

I am attempting to rewrite a piece of software, and the best I can 
determine is that it is attempting to grab  the information from the 
table, and place it into a variable, which it will then use to perform a 
math function on.  Unfortunately, there is no records in the DB for it 
to retrieve and the math calculation ends up being a divide by zero error:

Code fragment follows:
$sth = $dbh1->prepare("select emails,bugs,spyware,virus from counters 
where customer='$domainlogin'");
$sth->execute();
($demails,$dbugs,$dspyrware,$dvirus)=$sth->fetchrow_array();
$sth->finish();
$dbh1->disconnect;

If there is no record found, how can I test for this?  Ideally I would 
like to set these records equal to zero and continue (or insert the 
record ....).

Ideas?
--
Albert E. Whale, CISA CISSP
Sr. Security, Network, Risk Assessment and Systems Consultant
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