TCPDF and insert an image base64 encoded

Question

I\'ve this string from Mysql db:

$img_base64_encoded = 

\'data:image/svg+xml;base64,PD94bWwgdmVyc2lvbj0iMS4wIiBlbmNvZGluZz0iVVRGLTgiIHN0YW5kYWxvbmU9Im5vIj8+         


        

Answer 1

For those who generate an HTML variable for output, this is how I got it working: Note that I am generating a barcode using the tc-lib-barcode library found here

$img_base64_encoded = 'data:image/png;base64,' . base64_encode($bobj->getPngData());
$text.= '<img src="@' . preg_replace('#^data:image/[^;]+;base64,#', '', $img_base64_encoded) . '" width="200" height="30">';

Answer 2

No need to write as HTML

    $img = base64_decode(preg_replace('#^data:image/[^;]+;base64,#', '', $img_base64_encoded));
    $this->tcpdf->Image("@".$img, 68, 208, 46, 46);

Answer 3

You cannot use base64 stream in src rather first save the stream to a file then use it

$img_base64_encoded = 'data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAA0gA...';
$imageContent = file_get_contents($img_base64_encoded);
$path = tempnam(sys_get_temp_dir(), 'prefix');

file_put_contents ($path, $imageContent);

$img = '<img src="' . $path . '">';
$pdf->writeHTML($img, true, false, true, false, '');

Answer 4

Well, you can actually, looking at the code you just neet to add a '@' before the base64 encoded string:

$img_base64_encoded = 'data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAA0gA...';

$img = '<img src="@' . preg_replace('#^data:image/[^;]+;base64,#', '', $img_base64_encoded) . '">';

$pdf->writeHTML($img, true, false, true, false, '');

Tested with the last version of TCPDF