PHP Extension Requires Chilkat v11.7.0+

Extract One Section of a PDF by its Heading

See more PDF Text Extraction Examples

Demonstrates "labelValue": "section", which returns everything from a heading up to the next heading of the same or higher level. With the "markdown" operation the section keeps its own sub-headings. 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 sectioned_doc.pdf

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

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

//  The document has the sections Introduction, Opening Hours, Terms and Conditions (with the
//  sub-sections Admission, Safety and Liability) and Contact.  Get the Terms and Conditions:
//  everything after that heading up to the next heading of the same level (Contact).  The heading
//  itself is not part of the value; labelMatches[0].label has it.
$json->UpdateString('label','Terms and Conditions');
$json->UpdateString('labelValue','section');

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

print $jsonOut->stringOf('markdown') . "\n";

//  The same with the "text" operation gives the section as plain text.
$success = $pdf->ExtractText('text',$json,$jsonOut);
if ($success == false) {
    print $pdf->lastErrorText() . "\n";
    exit;
}

print '---- as text ----' . "\n";
print $jsonOut->stringOf('text') . "\n";

//  Sample output:

//  ### Admission
//  
//  Admission is free. Groups of more than ten should book in advance so that a volunteer can be assigned to them.
//  
//  ### Safety
//  
//  No more than eight people may be on the stair at one time. Children under twelve must be accompanied by an adult, and the lantern room is closed in high winds.
//  
//  ### Liability
//  
//  Visitors climb the tower at their own risk. The society carries public liability insurance but accepts no responsibility for personal property.
//  ---- as text ----
//  Admission
//  
//  Admission is free. Groups of more than ten should book in advance so that a volunteer can be assigned to them.
//  
//  Safety
//  
//  No more than eight people may be on the stair at one time. Children under twelve must be accompanied by an adult, and the lantern room is closed in high winds.
//  
//  Liability
//  
//  Visitors climb the tower at their own risk. The society carries public liability insurance but accepts no responsibility for personal property.

?>