How To Add Password Protection For A PDF File In Laravel

Here are the steps on how to add password protection for a PDF file in Laravel:

1. Install the php-pdftk composer package.

composer require mikehaertl/php-pdftk

2. Create a new controller called PDFController.

PHP

php artisan make:controller PDFController

3. Add the following method to the PDFController class:

PHP

public function downloadPDF(Request $request)
{
    $pdf_path = 'path/to/pdf/file.pdf';
    $password = 'my-password';

    $pdf = new Pdf($pdf_path);
    $pdf->setPassword($password);
    $pdf->saveAs($pdf_path);

    return response()->download($pdf_path);
}

4. In the route file, add the following route:

PHP

Route::get('/download-pdf', 'PDFController@downloadPDF');

5. Now, you can visit the /download-pdf route in your browser to download the password-protected PDF file.

Here are some additional details about the steps above:

• The php-pdftk composer package provides a PHP library for manipulating PDF files.
• The Pdf class in the mikehaertl/php-pdftk package can be used to create, modify, and encrypt PDF files.
• The setPassword() method of the Pdf class can be used to set a password for a PDF file.
• The saveAs() method of the Pdf class can be used to save a PDF file to a specified location.

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