how to write barcode in html format when using tcpdf

Question

I am using TCPDF to generate PDF file using following command

$pdf->writeHTML($htmlcontent, true, 0, true, 0);

TCPDF also provides a way to create barcode with following commands

$pdf->Cell(0, 0, 'C39+', 0, 1);
$pdf->write1DBarcode('Code 39', 'C39+', '', '', 80, 15, 0.4, $style, 'N');
$pdf->Ln();

I want to be able to write barcode as part of the HTML code above. Is there easy way?

I can potentially call a barcode image inthe writeHTML code above, but not sure how to use above barcode function (or any in TCPDF) which would allow me to create image and then get that image into HTML generation.

Solution 1

You can write TCPDF Methods in HTML as below

<?php
$params = $pdf->serializeTCPDFtagParameters(array('40144399300102444888207482244309', 'C128C', '', '', 0, 0, 0.2, array('position'=>'S', 'border'=>false, 'padding'=>4, 'fgcolor'=>array(0,0,0), 'bgcolor'=>array(255,255,255), 'text'=>false, 'font'=>'helvetica', 'fontsize'=>8, 'stretchtext'=>2), 'N'));    
$str='<table cellspacing="0" cellpadding="1" border="0">            
<tr> 
    <td align="left">barcode</td>
</tr>
<tr> 
    <td align="center" style="padding-left:5px;">';
    $str .= '<tcpdf method="write1DBarcode" params="'.$params.'" />';
    $str .='</td>
</tr>
</table>';

$pdf->writeHTML($str,true, false,false,false,'left');
$pdf->Output('example_049.pdf', 'I');
?>

For detail reference please check TCPDF example_049.php

Solution 2

TCPDF barcode classes already contains methods to export barcodes in various formats (SVG, PNG and HTML).

2D example:

require_once(dirname(__FILE__).'/2dbarcodes.php');
$barcodeobj = new TCPDF2DBarcode('http://www.tcpdf.org', 'QRCODE,H');

// export as SVG image
//$barcodeobj->getBarcodeSVG(3, 3, 'black');

// export as PNG image
//$barcodeobj->getBarcodePNG(3, 3, array(0,128,0));

// export as HTML code
echo $barcodeobj->getBarcodeHTML(3, 3, 'black');

1D example:

require_once(dirname(__FILE__).'/barcodes.php');
$barcodeobj = new TCPDFBarcode('123456', 'C128');

// export as SVG image
//$barcodeobj->getBarcodeSVG(2, 30, 'black');

// export as PNG image
//$barcodeobj->getBarcodePNG(2, 30, array(0,128,0));

// export as HTML code
echo $barcodeobj->getBarcodeHTML(2, 30, 'black');

Check the documentation and examples at http://www.tcpdf.org for further information.

Solution 3

You could put your barcode number is a fake HTML tag and then parse for that tag as you write out the HTML like in this example.

This would be in your HTML:

some HTML.... <POSTNET>12345-1234</POSTNET> ....some more HTML

This is the code to parse for the fake tag.

        // look to see if there is a POSTNET tag
        if (strpos($letter_html, "<POSTNET>") !== false) {
            $postnet_pre = explode("<POSTNET>", $letter_html);
            $this->WriteHTML($postnet_pre[0], $this->line_height);

            // write the barcode
            $postnet_post = explode("</POSTNET>", $postnet_pre[1]);
            $zip_code = $postnet_post[0];
            $this->write1DBarcode($zip_code, 'POSTNET', '', '', 80, 15, 0.4, $style, 'N');

            // write rest of the letter
            $this->WriteHTML($postnet_post[1], $this->line_height);

        } else {

            // no POSTNET so just write the whole letter
            $this->WriteHTML($letter_html, $this->line_height);
        }