require_once('tcpdf/tcpdf.php'); // Set up the TCPDF object $pdf = new TCPDF(PDF_PAGE_ORIENTATION, PDF_UNIT, PDF_PAGE_FORMAT, true, 'UTF-8', false); // Define the language-specific strings $myLanguageArray = array( 'Hello' => 'Bonjour', 'World' => 'Monde' ); // Set the language array for the TCPDF object $pdf->setLanguageArray($myLanguageArray); // Add content to the PDF $pdf->AddPage(); $pdf->SetFont('Helvetica', 'B', 16); $pdf->Write(0, 'Hello World!'); // Output the PDF $pdf->Output('example.pdf', 'I');In the above example, we first create a new TCPDF object and then define a custom language array with French translations for "Hello" and "World". We then set this language array for the TCPDF object using the setLanguageArray() method. Finally, we add some content to the PDF document and output it. The resulting PDF will display the French translations for "Hello" and "World". Package library: TCPDF