PHP Requires Chilkat v11.7.0+

Extract PDF Text to a StringBuilder and Save to a File

See more PDF Text Extraction Examples

Demonstrates ExtractTextSb, which writes the extracted text to a StringBuilder instead of returning it as a JSON string. Use it for large documents. The JSON output still receives the quality report. Chilkat2 PHP

<?php

use Chilkat2\JsonObject;
use Chilkat2\Pdf;
use Chilkat2\StringBuilder;

// 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 long_report.pdf

$pdf = new Pdf();
try {
    $pdf->LoadFile('qa_data/pdf/long_report.pdf');
} catch (\Chilkat2\Exception $e) {
    echo $e->getMessage(), "\n";
    exit;
}

echo 'Number of pages: ', $pdf->NumPages, "\n";

// ExtractTextSb takes the same operation and options as ExtractText, but the text
// goes to a StringBuilder.  This avoids building a very large JSON string for
// documents with many pages.
$json = new JsonObject();
$sbText = new StringBuilder();
$jsonOut = new JsonObject();

try {
    $pdf->ExtractTextSb('text', $json, $sbText, $jsonOut);
} catch (\Chilkat2\Exception $e) {
    echo $e->getMessage(), "\n";
    exit;
}

echo 'Extracted ', $sbText->Length, " characters.\n";

// Save the text to a file.
try {
    $sbText->WriteFile('qa_output/long_report.txt', 'utf-8', false);
} catch (\Chilkat2\Exception $e) {
    echo $e->getMessage(), "\n";
    exit;
}

// The JSON output does not contain the text, but it still has the quality report.
echo 'Quality: ', $jsonOut->StringOf('quality.rating'), "\n";
echo 'Pages with no text (need OCR): [', $jsonOut->StringOf('quality.pagesNeedingOcr'), "]\n";

// Sample output:

// Number of pages: 3
// Extracted 4522 characters.
// Quality: good
// Pages with no text (need OCR): []