php port of http://mainisusuallyafunction.blogspot.com/2012/04/minimal-encoder-for-uncompressed-pngs.html
php port of http://mainisusuallyafunction.blogspot.com/2012/04/minimal-encoder-for-uncompressed-pngs.html
php port of http://mainisusuallyafunction.blogspot.com/2012/04/minimal-encoder-for-uncompressed-pngs.html
php port of http://mainisusuallyafunction.blogspot.com/2012/04/minimal-encoder-for-uncompressed-pngs.html