PHP Extension Requires Chilkat v11.7.0+

Replace PDF Text on Selected Pages Only

See more PDF Text Replacement Examples

Demonstrates the "pages" option, which limits the search for placeholders and labels to the given pages: "all" (the default), "first", "last", "odd", "even", or a list such as "1,3,5-9". The two-page order confirmation carries the same "Status:" label on both pages; the status is changed on page 2 only, then on both pages. 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 order_confirmation.pdf

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

$json = new CkJsonObject();
$jsonOut = new CkJsonObject();

//  Both pages have "Status:   Pending".  With pages "2", only page 2 is searched.
$json->UpdateString('pages','2');
$json->UpdateString('labels[0].label','Status:');
$json->UpdateString('labels[0].value','Shipped');
$success = $pdf->TextReplace('check',$json,$jsonOut);
if ($success == false) {
    print $pdf->lastErrorText() . "\n";
    exit;
}

print 'pages 2: found on page(s) ' . $jsonOut->stringOf('replacements[0].pages') . "\n";

//  With every page searched, the default occurrence ("first") still replaces one -- the first in reading order.
$json->UpdateString('pages','all');
$success = $pdf->TextReplace('check',$json,$jsonOut);
if ($success == false) {
    print $pdf->lastErrorText() . "\n";
    exit;
}

print 'pages all, first occurrence: found on page(s) ' . $jsonOut->stringOf('replacements[0].pages') . "\n";

//  Every occurrence on every page.
$json->UpdateString('labels[0].occurrence','all');
$success = $pdf->TextReplace('apply',$json,$jsonOut);
if ($success == false) {
    print $pdf->lastErrorText() . "\n";
    exit;
}

print 'pages all, every occurrence: ' . $jsonOut->IntOf('replacements[0].count') . ' replaced on page(s) ' . $jsonOut->stringOf('replacements[0].pages') . "\n";

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

//  Sample output:

//  pages 2: found on page(s) 2
//  pages all, first occurrence: found on page(s) 1
//  pages all, every occurrence: 2 replaced on page(s) 1,2

?>