Remove Drepracated Zend_Pdf in magento 2

Expert [addtoany]

Sep '24

In Magento 2, the Zend_Pdf class is deprecated and has been replaced with Zend_Pdf (a part of the Laminas project, which succeeded Zend Framework). If you're working on a Magento 2 project and need to remove deprecated usages of Zend_Pdf, follow these steps to update your code:

1. Identify Deprecated Usage

Search for any usage of Zend_Pdf in your codebase. This might be in custom modules, extensions, or even core Magento code (though it's less common to modify core code).

2. Update Code to Use Laminas Pdf

Since Magento 2.4 and later versions use Laminas components, you should replace Zend_Pdf with Laminas_Pdf. Here's how you can perform the update.

Example: Update a Custom Module

Assume you have a custom module that uses Zend_Pdf to generate PDF files. Here’s how you can update it:

Old Code Using Zend_Pdf

Example


// Old usage of Zend_Pdf
require_once 'Zend/Pdf.php';

$pdf = new Zend_Pdf();
$page = new Zend_Pdf_Page(Zend_Pdf_Page::SIZE_A4);
$page->setFont(Zend_Pdf_Font::fontWithPath('/path/to/font.ttf'), 12);
$page->drawText('Hello World!', 100, 750);
$pdf->pages[] = $page;

header('Content-Type: application/pdf');
header('Content-Disposition: inline; filename="document.pdf"');
echo $pdf->render();

Updated Code Using Laminas_Pdf

Install Laminas Pdf if not already installed:
Ensure that laminas/laminas-pdf is included in your composer.json:

Example


"require": {
    "laminas/laminas-pdf": "^2.11"
}

Run composer update to install it.
Replace Deprecated Code:

Example


// Updated usage of Laminas_Pdf
require_once 'vendor/autoload.php';

use Laminas\Pdf\PdfDocument;
use Laminas\Pdf\Page;
use Laminas\Pdf\Font;

$pdf = new PdfDocument();
$page = new Page(Page::SIZE_A4);
$page->setFont(Font::fontWithPath('/path/to/font.ttf'), 12);
$page->drawText('Hello World!', 100, 750);
$pdf->pages[] = $page;

header('Content-Type: application/pdf');
header('Content-Disposition: inline; filename="document.pdf"');
echo $pdf->render();

3. Testing

After making these changes, thoroughly test the functionality to ensure that the PDF generation works as expected and that no issues arise from the transition.

4. Updating Custom Modules

If you have custom modules or extensions that rely on Zend_Pdf, you need to update them similarly:

Locate all files that use Zend_Pdf.
Replace Zend_Pdf with Laminas_Pdf.
Adjust any related functionality as needed.

5. Check for Core Modifications

If you’ve modified core Magento files directly (which is not recommended), make sure to check your modifications and update them accordingly. Ideally, avoid modifying core files; instead, use plugins or overrides.

6. Review Magento Documentation

Review the Magento 2.4 Developer Documentation for any updates or additional guidelines on handling deprecated components.

7. Stay Updated

Keep your Magento instance and dependencies up-to-date to avoid using deprecated components and to benefit from the latest security patches and improvements.

By following these steps, you should be able to successfully replace deprecated Zend_Pdf usage with Laminas_Pdf in your Magento 2 project.

Remove Drepracated Zend_Pdf in magento 2