Well, this warning means that either $total_hours
. Since previous line has
$total_hours = $row * 60;
and it doesn't cause a warning then $total_hours
can be excluded from suspect list. $total_minutes
gets its value from $row
which seems to be undefined. Are you sure that your query is correct and returns correct number of rows?
Probably fetchrow doesn't return what you expect it to return. Often to help myself debugging simular problems I use Data::Dumper to check if variables really have data I expect them to have. Try to add after line with fetchrow
to find out actual content of @row
. Once bug is fixed you can remove this debug print.