Add image watermark over another image in pdf php

Question

I am trying to add Raddyx Technologies watermark text in pdf using fpdf and FPDI. Watermark is appearing on all the pages but all the pages my watermark is showing below the image with more space. I want my watermarking image to come on top of the existing image on the pdf. I am using following code to add text Watermark

<?php
require('fpdf/fpdf.php');
require_once 'FPDI/fpdi.php';

class PDF_Rotate extends FPDI {

    var $angle = 0;

    function Rotate($angle, $x = -1, $y = -1) {
        if ($x == -1)
            $x = $this->x;
        if ($y == -1)
            $y = $this->y;
        if ($this->angle != 0)
            $this->_out('Q');
        $this->angle = $angle;
        if ($angle != 0) {
            $angle*=M_PI / 180;
            $c = cos($angle);
            $s = sin($angle);
            $cx = $x * $this->k;
            $cy = ($this->h - $y) * $this->k;
            $this->_out(sprintf('q %.5F %.5F %.5F %.5F %.2F %.2F cm 1 0 0 1 %.2F %.2F cm', $c, $s, -$s, $c, $cx, $cy, -$cx, -$cy));
        }
    }

    function _endpage() {
        if ($this->angle != 0) {
            $this->angle = 0;
            $this->_out('Q');
        }
        parent::_endpage();
    }

}

$fullPathToFile = "recipe.pdf";

class PDF extends PDF_Rotate {

    var $_tplIdx;

    function Header() {
        global $fullPathToFile;

        //Put the watermark
        //$this->Image('http://chart.googleapis.com/chart?cht=p3&chd=t:60,40&chs=250x100&chl=Hello|World', 40, 100, 100, 0, 'PNG');
        $this->SetFont('Arial', 'B', 50);
        $this->SetTextColor(255, 192, 203);
        $this->RotatedText(20, 230, 'Raddyx Technologies', 45);

        if (is_null($this->_tplIdx)) {

            // THIS IS WHERE YOU GET THE NUMBER OF PAGES
            $this->numPages = $this->setSourceFile($fullPathToFile);
            $this->_tplIdx = $this->importPage(1);
        }
        $this->useTemplate($this->_tplIdx, 0, 0, 200);


    }

    function RotatedText($x, $y, $txt, $angle) {
        //Text rotated around its origin
        $this->Rotate($angle, $x, $y);
        $this->Text($x, $y, $txt);
        $this->Rotate(0);
    }

}


$pdf = new PDF();
//$pdf = new FPDI();
$pdf->AddPage();
$pdf->SetFont('Arial', '', 12);


for ($i = 0; $i < 25; $i++) {
    $pdf->MultiCell(0, 5, $txt, 0, 'J');
}*/


if($pdf->numPages>1) {
    for($i=2;$i<=$pdf->numPages;$i++) {
        //$pdf->endPage();
        $pdf->_tplIdx = $pdf->importPage($i);
        $pdf->AddPage();
    }
}

$pdf->Output();
?>

Socuce : https://github.com/chinmay235/php-pdf-watermark

My existing PDF file - http://trackprintorders.com/recipe.pdf

Output:

Grégor González Grégor González · Accepted Answer · 2016-07-08T16:19:07

This problem appear when you put the watermark first and then the image. You must use RotatedText after importing any page or image.

You can use the function in footer method, this will allow to use the watermark in all pages.

Also this watermark is plain text, won't use any transparency.

Add image watermark over another image in pdf php

1 Answers