this is only the piece of the error, there is more, so I use strict.

I now changed it into this:

#!usr/bin/perl

use 5.6.1;

use strict;
use warnings;
use DBI;

my$dbh = DBI->connect("DBI:Pg:dbname=five; port=5432", 'postgres', '',
+{ RaiseError => 1, AutoCommit => 0 })
or die "kon de database niet openen!";
[download]

and now I get this:
DBD::Pg::db do failed: ERROR: parser: parse error at or near "voor" at character 94
DBD::Pg::db do failed: ERROR: parser: parse error at or near "voor" at character 94

and what is the meaning of that?