Another option is to use placeholders, which is even cleaner than using $dbh->quote(). It isn't the right fit for 100% of your queries and statements, but it is for 99% of them. Check the DBI:: docs for details on how to use it.
It would be something like.
my $sth = $dbh->prepare("INSERT INTO users (fname, lname, phone) VA
+LUES(?, ?, ?)");
$sth->execute($fname, $lname, $phone);