Comments on: EAN13 Barcode Check Digit with PHP http://www.edmondscommerce.co.uk/php/ean13-barcode-check-digit-with-php/ Freelance PHP Ecommerce and SEO Developer in the UK Sat, 11 Feb 2012 03:49:53 +0000 hourly 1 http://wordpress.org/?v=3.1.3 By: GioMBG http://www.edmondscommerce.co.uk/php/ean13-barcode-check-digit-with-php/comment-page-1/#comment-3774 GioMBG Mon, 30 Jan 2012 11:12:18 +0000 http://www.edmondscommerce.co.uk/blog/php/ean13-barcode-check-digit-with-php/#comment-3774 ONLY THANKS! ONLY THANKS!

]]> By: jerry http://www.edmondscommerce.co.uk/php/ean13-barcode-check-digit-with-php/comment-page-1/#comment-3373 jerry Sun, 31 Jul 2011 12:36:16 +0000 http://www.edmondscommerce.co.uk/blog/php/ean13-barcode-check-digit-with-php/#comment-3373 Function added by ADMIN is not correct - you need to multiple odd number by 3 not even $next_ten = (ceil(((3*$odd_sum)+$even_sum)/10))*10 Function added by ADMIN is not correct – you need to multiple odd number by 3 not even

$next_ten = (ceil(((3*$odd_sum)+$even_sum)/10))*10

]]> By: Frank http://www.edmondscommerce.co.uk/php/ean13-barcode-check-digit-with-php/comment-page-1/#comment-3076 Frank Fri, 28 Jan 2011 13:17:25 +0000 http://www.edmondscommerce.co.uk/blog/php/ean13-barcode-check-digit-with-php/#comment-3076 Function added by Rémi is not correct, it gives out the wrong result. However, original function by admin is correct. Thanks a lot. Function added by Rémi is not correct, it gives out the wrong result.
However, original function by admin is correct.
Thanks a lot.

]]> By: admin http://www.edmondscommerce.co.uk/php/ean13-barcode-check-digit-with-php/comment-page-1/#comment-2913 admin Thu, 14 Oct 2010 14:00:07 +0000 http://www.edmondscommerce.co.uk/blog/php/ean13-barcode-check-digit-with-php/#comment-2913 nice - added syntax highlighting to make it more readable nice – added syntax highlighting to make it more readable

]]> By: Rémi http://www.edmondscommerce.co.uk/php/ean13-barcode-check-digit-with-php/comment-page-1/#comment-2912 Rémi Thu, 14 Oct 2010 13:35:14 +0000 http://www.edmondscommerce.co.uk/blog/php/ean13-barcode-check-digit-with-php/#comment-2912 There is a better way that works with EAN13 and EAN8: [php] function get_ean_checkdigit($barcode){ $sum = 0; for($i=(strlen($barcode));$i>0;$i--){ $sum += (($i % 2) * 2 + 1 ) * substr($barcode,$i-1,1); } return (10 - ($sum % 10)); } [/php] -- Rémi There is a better way that works with EAN13 and EAN8:

PLAIN TEXT
PHP:
  1. function get_ean_checkdigit($barcode){
  2.         $sum = 0;
  3.         for($i=(strlen($barcode));$i>0;$i--){
  4.                 $sum += (($i % 2) * 2 + 1 ) * substr($barcode,$i-1,1);
  5.         }
  6.         return (10 - ($sum % 10));
  7. }

--
Rémi

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