Fpdf Laravel Package

Getting Started

Minimal Setup

1. Installation Add the package via Composer:

   composer require itbz/fpdf
   

   Ensure autoload is dumped:

   composer dump-autoload
   

2. First Use Case: Basic PDF Generation Create a controller method or service to generate a simple PDF:

   use Itbz\Fpdf\Fpdf;
   
   public function generatePdf()
   {
       $pdf = new Fpdf();
       $pdf->AddPage();
       $pdf->SetFont('Arial', 'B', 16);
       $pdf->Cell(40, 10, 'Hello, Laravel!');
       return $pdf->Output('example.pdf', 'D'); // 'D' forces download
   }
   

3. Where to Look First

   • Documentation: Check the FPDF official docs (this package is a PSR-0 wrapper).
   • Source: Browse vendor/itbz/fpdf/src/ for core classes (Fpdf.php, Fpdf_tpl.php).
   • Examples: Clone the repo and inspect examples/ for use cases.

Implementation Patterns

Core Workflows

1. PDF Generation in Controllers Use middleware to handle PDF requests (e.g., Route::get('/pdf', [PdfController::class, 'generate'])). Example:

   public function generateInvoice($id)
   {
       $invoice = Invoice::findOrFail($id);
       $pdf = new Fpdf();
       $pdf->AddPage();
       $pdf->SetFont('Arial', '', 12);
       $pdf->Cell(0, 10, "Invoice #{$invoice->id}", 0, 1, 'C');
       // Add more content...
       return $pdf->Output("invoice_{$id}.pdf", 'D');
   }
   

2. Dynamic Content with Views Extend FPDF to render Blade views:

   use Itbz\Fpdf\Fpdf;
   use Illuminate\Support\Facades\View;
   
   public function renderViewAsPdf($view, $data = [])
   {
       $pdf = new Fpdf();
       $pdf->AddPage();
       $html = View::make($view, $data)->render();
       $pdf->WriteHTML($html); // Requires FPDF's HTML extension (see Gotchas)
       return $pdf->Output();
   }
   

3. Storing PDFs in Storage Save generated PDFs to storage/app/public:

   use Illuminate\Support\Facades\Storage;
   
   public function savePdf($filename, $content)
   {
       Storage::put("pdfs/{$filename}", $content);
       return Storage::url("pdfs/{$filename}");
   }
   

4. Queueing PDF Jobs Offload PDF generation to a queue (e.g., for large reports):

   use Illuminate\Support\Facades\Queue;
   
   Queue::push(new GeneratePdfJob($userId));
   

Integration Tips

• Laravel Mix: Use mix.js('js/pdf-handler.js', 'public/js') to handle client-side PDF triggers.
• API Responses: Return PDFs as binary in APIs:

  return response($pdf->Output('', 'S'), 200, [
      'Content-Type' => 'application/pdf',
      'Content-Disposition' => 'inline; filename="report.pdf"',
  ]);
  

• Testing: Mock FPDF in unit tests:

  $mockPdf = Mockery::mock('Itbz\Fpdf\Fpdf');
  $mockPdf->shouldReceive('Output')->andReturn('fake-pdf');
  

Gotchas and Tips

Pitfalls

1. HTML Extension Missing

   • The base package lacks HTML support. Install the extension separately:

     composer require setasign/fpdf-html
     

   • Load it in your PDF class:

     use setasign\Fpdf\Html;
     $pdf = new Fpdf();
     $pdf->AddPage();
     $pdf->SetFont('Arial');
     $pdf->WriteHTML('<b>Hello, HTML!</b>');
     

2. Font Paths

   • FPDF requires fonts in a specific directory. Copy fonts from vendor/itbz/fpdf/fonts/ to your project (e.g., public/fonts/).
   • Update paths in Fpdf.php or use:

     $pdf->AddFont('DejaVu', '', 'DejaVuSansCondensed.php');
     

3. Memory Limits

   • Large PDFs (e.g., 1000+ pages) may hit PHP’s memory_limit. Increase it in .env:

     MEMORY_LIMIT=512M
     

4. Deprecated Methods

   • Some FPDF methods (e.g., SetXY) are deprecated. Use SetLeftMargin/SetTopMargin or Ln() for line breaks.

5. Archived Package Risks

   • The package is archived (no updates). Fork it or use a maintained alternative like mikehaertl/phpwkhtmltopdf for HTML-to-PDF.

Debugging

• Check Output Early: Use $pdf->Output('debug.pdf', 'F') to save intermediate states.
• Error Logging: Wrap PDF generation in a try-catch:

  try {
      $pdf->Cell(0, 0, 'Error-prone content');
  } catch (\Exception $e) {
      Log::error("PDF Generation Failed: " . $e->getMessage());
  }
  

• Validate Fonts: Ensure font files are readable and paths are correct.

Extension Points

1. Custom PDF Classes Extend Fpdf to add reusable methods:

   class CustomPdf extends Fpdf {
       public function addLogo($path, $width = 30) {
           $this->Image($path, 10, 8, $width);
       }
   }
   

2. Dynamic Styling Create a helper to apply consistent styles:

   $pdf->SetFont('Arial', 'B', 12);
   $pdf->SetTextColor(0, 0, 0); // Black
   $pdf->SetDrawColor(200, 200, 200); // Light gray borders
   

3. Multi-Language Support Use FPDF’s built-in language support:

   $pdf->AddPage();
   $pdf->SetFont('Arial', '', 'utf-8');
   $pdf->Write(5, 'Привет, мир!'); // Russian
   

4. Barcode Integration Combine with libraries like milbo/milbo-barcode for dynamic barcodes:

   $barcode = new Milbo\Barcode\Barcode();
   $barcode->render('png', $pdf->GetX(), $pdf->GetY(), 20, 50, '12345678');