用fpdi修改pdf文件 例子（demo）

<?php
ini_set('max_execution_time',0);
define('FPDF_FONTPATH','font/');
require('fpdf.php');
require('fpdi.php');

// initiate FPDI

$pdf = new FPDI();
// add a page

$pdf->AddPage();
// set the sourcefile

$pdf->setSourceFile('fk.pdf');
// import page 1

$tplIdx = $pdf->importPage(1);
// use the imported page and place it at point 10,10 with a width of 100 mm

$pdf->useTemplate($tplIdx, 10, 10, 100);

// now write some text above the imported page

$pdf->SetFont('Arial');
$pdf->SetTextColor(255,0,0);
$pdf->SetXY(25, 25);
$pdf->Write(0, "This is just a simple text");

$pdf->Output('newpdf.pdf', 'F');
?>