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  1. or download this
    my $sql = "SELECT script FROM scripts where name=?";
my $sth = $dbh->prepare($sql);
$sth->execute($ref->{name});
  2. or download this
    "$sql"                 ->  $sql
"$row_hash->{script}"  ->  $row_hash->{script}
"$script"              ->  $script
  3. or download this
    $r->puts(<<"END");     \
$post                   >  $->puts($post)
END                    /
  4. or download this
    my $row_hash = $sth->fetchrow_hashref()
   or die(...);

$script = $row_hash->{script};
  5. or download this
    my $result = eval $script;
defined($result)
   or die(...);

$post .= $result;