问php/wordpress:如何在政府pdf表单上“叠加”数据？

EN

<?php

require_once('fpdf.php');
require_once('fpdi.php');

$pdf = new FPDI();

// get the page count
$pageCount = $pdf->setSourceFile('base.pdf');
// iterate through all pages
$pageNo = 1;
// import a page
$templateId = $pdf->importPage($pageNo);
// get the size of the imported page
$size = $pdf->getTemplateSize($templateId);

// create a page (landscape or portrait depending on the imported page size)
if ($size['w'] > $size['h']) {
    $pdf->AddPage('L', array($size['w'], $size['h']));
} else {
    $pdf->AddPage('P', array($size['w'], $size['h']));
}

// use the imported page
$pdf->useTemplate($templateId);

// set the font typeface and size
$pdf->SetFont('Helvetica');
$pdf->setFontSize(20);


// set position where to write
$pdf->SetXY(10, 10);
$pdf->Write(8, 'Hello World!');

// don't save a local copy, but instead output stream to the browser
$pdf->Output("output.pdf", "I");