如何使用php创建pdf

i want to create PDF file for my PHP web page it must be some button like create PDF then user click button PDF file must automatically generate my web page dynamic page it contain MySQL tables how i do it and there are any open source software for it ...

Generate the PHP as you usually would but add the header

header("Content-Type: application/pdf");
header('Content-Disposition:inline; filename="testing.pdf"'); //view in browser

Or

 header("Content-Type: application/pdf");
 header('Content-Disposition:attachment; filename="testing.pdf"'); //force download

You can make PDFs with fpdf: http://fpdf.org/

<?php
require('fpdf.php');

$pdf = new FPDF();
$pdf->AddPage();
$pdf->SetFont('Arial','B',16);
$pdf->Cell(40,10,'Hello World!');
$pdf->Output();
?>