PHP Extension Requires Chilkat v11.7.0+

Page Numbers, Dates and the File Name in a PDF Watermark

See more PDF Watermark Examples

Demonstrates the placeholders a text watermark understands, each replaced per page as the watermark is added: {page} is the page number, {pages} the page count, {date:FORMAT} the current local date and time, and {filename} the name of the file that was loaded. Two braces give a literal brace. pageNumber.start sets what {page} is on the first page, which is how a numbering that ignores a cover is produced, and pageNumber.style formats both {page} and {pages} as decimal, romanUpper, romanLower, letterUpper or letterLower. PHP Extension

<?php

include("chilkat.php");

$success = false;

//  This example requires the Chilkat API to have been previously unlocked.
//  See Global Unlock Sample for sample code.

//  The PDF used in this example is available at four_pages.pdf

$pdf = new CkPdf();
$success = $pdf->LoadFile('qa_data/pdf/four_pages.pdf');
if ($success == false) {
    print $pdf->lastErrorText() . "\n";
    exit;
}

$json = new CkJsonObject();
$json->UpdateString('type','text');
$json->UpdateString('text','Page {page} of {pages}  -  printed {date:yyyy-MM-dd HH:mm}  -  {filename}');
$json->UpdateString('id','pagefoot');
$json->UpdateString('position.align','bottom');
$json->UpdateNumber('position.margin','24');
$json->UpdateNumber('font.size','9');
$json->UpdateString('color','#505050');

$jsonOut = new CkJsonObject();
$success = $pdf->Watermark('add',$json,$jsonOut);
if ($success == false) {
    print $pdf->lastErrorText() . "\n";
    exit;
}

print 'footer pages: ' . $jsonOut->stringOf('pages') . "\n";

//  Roman numerals that start at i on page 2, so that a cover page is not numbered.
$pdf2 = new CkPdf();
$success = $pdf2->LoadFile('qa_data/pdf/four_pages.pdf');
if ($success == false) {
    print $pdf2->lastErrorText() . "\n";
    exit;
}

$json2 = new CkJsonObject();
$json2->UpdateString('type','text');
$json2->UpdateString('text','- {page} -');
$json2->UpdateString('id','roman');
$json2->UpdateString('pages','2-');
$json2->UpdateInt('pageNumber.start',1);
$json2->UpdateString('pageNumber.style','romanLower');
$json2->UpdateString('position.align','bottom');
$json2->UpdateNumber('font.size','10');
$success = $pdf2->Watermark('add',$json2,$jsonOut);
if ($success == false) {
    print $pdf2->lastErrorText() . "\n";
    exit;
}

print 'roman pages: ' . $jsonOut->stringOf('pages') . "\n";

$success = $pdf->WriteFile('qa_output/four_pages_numbered.pdf');
if ($success == false) {
    print $pdf->lastErrorText() . "\n";
    exit;
}

//  Sample output:

//  footer pages: 1-4
//  roman pages: 2-4

?>