EVOLUTION-MANAGER

Edit File: issue21946.pl

#!/usr/bin/perl use GD; use DBI; # Load Database Interface Module use Data::Dumper; # Connect to database my $dbh = DBI->connect ('DBI:mysql:database=test;host=localhost:mysql_server_prepare=1', 'myUser', 'myPassword', {RaiseError => 1}) or die "$0: Can not connect to database: " . $DBI::errstr; # create a new image $im = new GD::Image(6490,4000); # allocate color black $black = $im->colorAllocate(0,0,0); # The maximum id value in table is 25958999 my $sth = $dbh->prepare("SELECT id FROM myTable WHERE id=?"); my $id = 1; foreach $x (0..6489) { print "x=$x/6490 id=$id\n"; foreach $y (0..3999){ $sth->execute($id); if ($sth->fetchrow_array) { $im->setPixel($x,$y,$black); } $id = $id + 1; } open(OUT,">/tmp/id.png") or die "can not write output file"; binmode OUT; print OUT $im->png; close(OUT); }