How Can I Edit PDF Text Using PHP?

PDF Editing in PHP

Editing PDF documents in PHP can be a daunting task, but it is possible using open-source or zero-license cost methods. One approach to editing PDFs in PHP involves replacing text within the document.

To achieve this, you can leverage the Zend Framework. This snippet illustrates how to add text to a PDF document:

<?php
require_once 'Zend/Pdf.php';

$pdf = Zend_Pdf::load('blank.pdf');
$page = $pdf->pages[0];
$font = Zend_Pdf_Font::fontWithName(Zend_Pdf_Font::FONT_HELVETICA);
$page->setFont($font, 12);
$page->drawText('Hello world!', 72, 720);
$pdf->save('zend.pdf');

However, replacing inline content within a PDF is more complex as it can disrupt the document's layout. This is because PDFs do not contain information about the layout intent of their primitive drawing elements.

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