Pop\Pdf\Pdf::addUrl PHP Method

    public function addUrl($x, $y, $w, $h, $url)
    {
        $x2 = $x + $w;
        $y2 = $y + $h;
        $i = $this->lastIndex($this->objects) + 1;
        // Add the annotation index to the current page's annotations and add the annotation to _objects array.
        $this->objects[$this->objects[$this->pages[$this->curPage]]->index]->annots[] = $i;
        $this->objects[$i] = new Object\Object("{$i} 0 obj\n<<\n    /Type /Annot\n    /Subtype /Link\n    /Rect [{$x} {$y} {$x2} {$y2}]\n    /Border [0 0 0]\n    /A <</S /URI /URI ({$url})>>\n>>\nendobj\n\n");
        return $this;
    }

require_once '../../bootstrap.php';
use Pop\Color\Space\Rgb;
use Pop\Pdf\Pdf;
try {
    $pdf = new Pdf('../tmp/doc.pdf');
    $pdf->addPage('Letter');
    $pdf->setVersion('1.4')->setTitle('Test Title')->setAuthor('Test Author')->setSubject('Test Subject')->setCreateDate(date('D, M j, Y h:i A'));
    $pdf->setCompression(true);
    $pdf->setTextParams(6, 6, 100, 100, 30, 0)->setFillColor(new Rgb(12, 101, 215))->setStrokeColor(new Rgb(215, 101, 12));
    $pdf->addFont('Arial');
    $pdf->addText(50, 620, 18, 'Hello World! & You!', 'Arial');
    $pdf->setTextParams();
    $pdf->addFont('Courier-Bold');
    $pdf->addText(150, 350, 48, 'Hello World!', 'Courier-Bold');
    $sz = $pdf->getStringSize('Hello World!', 'Courier-Bold', 48);
    $pdf->addUrl(150, 350 - $sz['baseline'], $sz['width'], $sz['height'], 'http://www.google.com/');
    $pdf->addPage('Letter');
    $pdf->setFillColor(new Rgb(12, 101, 215))->setStrokeColor(new Rgb(215, 101, 12))->setStrokeWidth(4, 10, 5);
    $pdf->drawCircle(150, 700, 60, false);
    $pdf->setPage(1)->setFillColor(new Rgb(0, 0, 255));
    $pdf->drawRectangle(100, 550, 175, 50);
    $pdf->addLink(100, 550, 175, 50, 150, 550, 1, 2);
    $pdf->setPage(2)->setFillColor(new Rgb(12, 101, 215))->setStrokeColor(new Rgb(215, 101, 12))->setStrokeWidth(4, 10, 5);
    $pdf->drawCircle(250, 650, 25);
    $pdf->addImage('../assets/images/logo-rgb.jpg', 150, 400);
    $pdf->setPage(1)->setFillColor(new Rgb(255, 10, 25))->setStrokeColor(new Rgb(12, 101, 215))->setStrokeWidth(2);
    $pdf->drawEllipse(300, 150, 200, 100, false);
    $pdf->addPage('Legal');
    $pdf->addFont('Courier-Bold');
    $pdf->addText(50, 650, 36, 'Hello World Again!', 'Courier-Bold');
    $pdf->addUrl(50, 650, 380, 36, 'http://www.popphp.org/');