Saving Magento Barcode image in excel - excel

Question

I am trying to save generate and save the barcode in excel. However, I am having problem saving the image in the correct format. The image is saved in the last column. But, I am not sure how save it.
hope someone can help. Code as below:
<?php
require_once '../app/Mage.php';
umask(0);
Mage::app();
Mage::app()->loadArea(Mage_Core_Model_App_Area::AREA_FRONTEND);
header("Content-type:text/octect-stream");
header("Content-Disposition:attachment;filename=exportMyEANCodes.csv");
$eanPrefixCode="0123456";
$storeId = Mage::app()->getStore()->getId();
$product = Mage::getModel('catalog/product');
$products = $product->getCollection()->addStoreFilter($storeId)->getAllIds();
echo '"sku","ean","barcode"'. "\n";
foreach($products as $productid)
{
$product = Mage::getModel('catalog/product')->load($productid);
$sku = $product->getSku();
$ean=ean13_check_digit($eanPrefixCode. str_pad($product->getId(), 5, "0", STR_PAD_LEFT));
$bc = new barCode();
//$bc->build($ean);
$output='"'. $sku. '","'. $ean. '","'.$bc->build($ean).'"';
echo $output. "\n";
}
$bc = new barCode();
$bc->build($ean);
function ean13_check_digit($digits){
$digits =(string)$digits;
$even_sum = $digits{1} + $digits{3} + $digits{5} + $digits{7} + $digits{9} + $digits{11};
$even_sum_three = $even_sum * 3;
$odd_sum = $digits{0} + $digits{2} + $digits{4} + $digits{6} + $digits{8} + $digits{10};
$total_sum = $even_sum_three + $odd_sum;
$next_ten = (ceil($total_sum/10))*10;
$check_digit = $next_ten - $total_sum;
return $digits . $check_digit;
}
class barCode
{
public $bcHeight, $bcThinWidth, $bcThickWidth, $bcFontSize, $mode;
function __construct($mode='gif', $height=50, $thin=2, $thick=3, $fSize=2)
{
$this->bcHeight = $height;
$this->bcThinWidth = $thin;
$this->bcThickWidth = $this->bcThinWidth * $thick;
$this->fontSize = $fSize;
$this->mode = $mode;
$this->outMode = array('gif'=>'gif', 'png'=>'png', 'jpeg'=>'jpeg', 'wbmp'=>'vnd.wap.wbmp');
$this->codeMap = array(
'0'=>'010000101', '1'=>'100100001', '2'=>'001100001', '3'=>'101100000',
'4'=>'000110001', '5'=>'100110000', '6'=>'001110000', '7'=>'000100101',
'8'=>'100100100', '9'=>'001100100', 'A'=>'100001001', 'B'=>'001001001',
'C'=>'101001000', 'D'=>'000011001', 'E'=>'100011000', 'F'=>'001011000',
'G'=>'000001101', 'H'=>'100001100', 'I'=>'001001100', 'J'=>'000011100',
'K'=>'100000011', 'L'=>'001000011', 'M'=>'101000010', 'N'=>'000010011',
'O'=>'100010010', 'P'=>'001010010', 'Q'=>'000000111', 'R'=>'100000110',
'S'=>'001000110', 'T'=>'000010110', 'U'=>'110000001', 'V'=>'011000001',
'W'=>'111000000', 'X'=>'010010001', 'Y'=>'110010000', 'Z'=>'011010000',
' '=>'011000100', '$'=>'010101000', '%'=>'000101010', '*'=>'010010100',
'+'=>'010001010', '-'=>'000110100', '.'=>'110000100', '/'=>'010100010'
);
}
public function build($text='', $showText=true, $fileName=null)
{
if (trim($text) <= ' ')
throw new exception('barCode::build - must be passed text to operate');
if (!$fileType = $this->outMode[$this->mode])
throw new exception("barCode::build - unrecognized output format ({$this->mode})");
if (!function_exists("image{$this->mode}"))
throw new exception("barCode::build - unsupported output format ({$this->mode} - check phpinfo)");
$text = strtoupper($text);
$dispText = "* $text *";
$text = "*$text*"; // adds start and stop chars
$textLen = strlen($text);
$barcodeWidth = $textLen * (2 * $this->bcThinWidth + 3 * $this->bcThickWidth) - $this->bcThinWidth;
$im = imagecreate($barcodeWidth, $this->bcHeight);
$black = imagecolorallocate($im, 0, 0, 0);
$white = imagecolorallocate($im, 255, 255, 255);
imagefill($im, 0, 0, $white);
$xpos = 0;
for ($idx=0; $idx<$textLen; $idx++)
{
if (!$char = $text[$idx]) $char = '-';
for ($ptr=0; $ptr<=8; $ptr++)
{
$elementWidth = ($this->codeMap[$char][$ptr]) ? $this->bcThickWidth : $this->bcThinWidth;
if (($ptr + 1) % 2)
imagefilledrectangle($im, $xpos, 0, $xpos + $elementWidth-1, $this->bcHeight, $black);
$xpos += $elementWidth;
}
$xpos += $this->bcThinWidth;
}
if ($showText)
{
$pxWid = imagefontwidth($this->fontSize) * strlen($dispText) + 10;
$pxHt = imagefontheight($this->fontSize) + 2;
$bigCenter = $barcodeWidth / 2;
$textCenter = $pxWid / 2;
imagefilledrectangle($im, $bigCenter - $textCenter, $this->bcHeight - $pxHt, $bigCenter + $textCenter, $this->bcHeight, $white);
imagestring($im, $this->fontSize, ($bigCenter - $textCenter) + 5, ($this->bcHeight - $pxHt) + 1, $dispText, $black);
}
$badMode = false;
if (!$fileName) header("Content-type: image/{$fileType}");
switch($this->mode)
{
case 'gif':
imagegif($im, $fileName);
break;
case 'png':
imagepng($im, $fileName);
break;
case 'jpeg':
imagejpeg($im, $fileName);
break;
case 'wbmp':
imagewbmp($im, $fileName);
break;
default:
$badMode = true;
}
imagedestroy($im);
if ($badMode)
throw new Exception("barCode: Unknown Graphics Type '{$this->mode}'");
}
}
?>

Answer 1

I did some testing and I, too, saw a lot of those same characters!
Perhaps an alternative method: Have your script output the desired CSV file, but in the 3rd field, make a URL. You could make a small script in var/export/sku.php:
<?php
require_once '../../app/Mage.php';
umask(0);
Mage::app();
Mage::app()->loadArea(Mage_Core_Model_App_Area::AREA_FRONTEND);
if( isset($_GET['sku']) && strlen($_GET['sku']) > 5 ) {
header('Content-Type: image/jpeg');
$barcodeOptions = array('text' => $_GET['sku']);
$rendererOptions = array();
$imageResource = Zend_Barcode::draw(
'code39', 'image', $barcodeOptions, $rendererOptions
);
imagejpeg($imageResource);
} ?>
Then in your script, you have (sku),ean,http://yoursite.com/var/export/sku.php?sku=(sku) There is a way to have the spreadsheet load the images -- though I haven't done this personally, I have seen links displayed as embedded images.
My sample above outputs a code39 barcode, which is scannable. You can replace with your own image generation. This is why I asked if you saw barcodes, as I haven't output rendered images like this before.