print BASE64 coded image into a FPDF document

Question

I\'ve some as base64 stored images in a database. Is it possible to print those data directly in a PDF document, using FPDF?

Data sctructure of the image

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Answer 1

New solution with imagecreatefromstring() Summer 2019

• delete temporary .png if exist
• create temporary .png file
• use $pdf->Image (fpdf)

My Api returns me a Datamatrix of 1234 as Byte Array. The folowing code shows you how to use that Byte Array as Png in Fpdf.

My $response = "iVBORw0KGgoAAAANSUhEUgAAAAoAAAAKCAYAAACNMs+9AAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsMAAA7DAcdvqGQAAABJSURBVChTjYwBCgAgCAP9/6dNreVUgg7Gps3EUOfD5Q4Au6YdAGcH8ygyVKrFnhmbc9FL7qRxWRxEkXWW4Q691UsGpZPzt7dEFyY47RMW+x2LAAAAAElFTkSuQmCC"

$filename = '/lk_Reptool/printing/tmp/tmppng.png';

if (file_exists($filename)) {
    unlink($filename);
}
$response = file_get_contents('https://myapi.com/TwoDCode/GetDatamatrixAsPngByteArray?datamatrixText=' . $RepID . '&pixelSize=100');
$response = base64_decode($response);
$img = imagecreatefromstring($response);
imagepng($img, $filename);

code for pdf

$pdf = new PDF('P', 'mm', 'A4');
$pdf->AddPage();
$pdf->Image('/lk_Reptool/printing/tmp/tmppng.png', 180, 20, 10, 10);