Laravel - FPDF error: Undefined font

Question

What am I doing

I’m rewriting a small barcode generation system using Laravel.

What went wrong

I’m instantiating the classes normally, but when I use the method $pdf->SetFont('Arial','B',$fontSize); I get the message FPDF error: Undefined font: Helvetica B. As you can see in the screenshot below, the "font" folder is already included inside the library folder. I entered inside the library and searched for the method Setfont, and only changed the folder path, since the lib and font file is inside my directory.

My Code

I will leave only small parts of the code

<?php namespace App\Http\Controllers;

//Declaração de uso de elementos para layout, bibliotecas e depois model com bd
use View, Input, Validator, FPDF, eFPDF, BarcodeClass, BarcodeEAN, DB, App\Models\Barcode;

class HomeController extends Controller {

public function index() {
    return view('frontend.home');
}

public function gerarPdf() {

    //parte inicial do código

    //Cria um novo PDF
    $pdf = new eFPDF('P', 'pt');

    //Modifica informações de visualização do PDF
    $pdf->SetFont('Arial','B',$fontSize);

Within the FPDF.php class it has the method below that is called to import the fonts.

function _getfontpath()
{
    if(!defined('FPDF_FONTPATH') && is_dir(dirname(__FILE__).'font/'))
        define('FPDF_FONTPATH',dirname(__FILE__).'/font/');
    return defined('FPDF_FONTPATH') ? FPDF_FONTPATH : '';
}

Answer 1

First: the method of getPath was being called but the define was not getting the full path of the folder. His dirname was not working, so I switched to app_path().'/Libraries/FPDF/font/', and at the end of the gerarPdf method soon after the $pdf->Output i put exit; otherwise the browser would show the characters below:

%PDF-1.3 3 0 obj <> endobj 4 0 obj <> stream x and N 0 } R< ? W$@�g(�g^�� ��r���~��w&)����Z�^�cx;Ώ��g���G���W|�E> ���i̔4c{��:� r�+���L&�Ʉ޽s"Hh&h�F2c�2��nڢ�,���"���L��<�i ��e�i � +I�φi���i4;,��ۜf�:���۝� ���$<4�9�9��qE���Q�M�i&21���n�^X�~��N+{�)O�yi�tVL�Y��*�f����]Hjj�t#M�B���m�6��>r^��-��WN^�[7 F U F 1 b f, 9y > | k ~r[L m l? /��U�n��KxY�G7�x��(�ak�6r���V��T��=��sc�6{� endstream endobj 5 0 obj <> endobj 6 0 obj <> stream x�e��N�0��} �<��? W$@�g(�g^����o{i��~��w�I��k������W�%ư��˺݉�����qW۵��%�p ���ڋ|6�Ә)i���u��4�WN1�L6� �{�D6��L�L�d��2���m�L�k�JIiy& Of��[��q�έa�d%����q@6�A�c�:z���؄��t�v� �� ���$vh@s@s�R�)b�Gy[�(O30����Lts����s�7Z��Lyb̓H��3�bb���gV�4�'��h��B�P�P��э4�����Q�H����ڕ�R��y��R�qb���w޸kL��y��-��;��L��t>�{���-F[>��K�����cW+˰-S׶���M-�-�ǰ~^߮? (V' endstream endobj 7 0 obj <> endobj 8 0 obj <> stream x and N1 < Kh w[$@ g"5 υ3 I | z' S Jߧ -<�/1��^����~���r���$�����Q�Q��8�l��;�?��� d��s\�L�e&Wh�D6��\�6�I3�@&�I$3Ι1����Y�Y�L��8ςK��� mq�R1ۊn+��n� �6t۠m�ۆn;���6�m�l;��趻�vxvȠ��ӰC�M0h��"F�����Q�f`"���+�b%�j�7Z��L�ʘ�"�����#+�Y%�̞�!�� L:ӛ��n����}z����y��m�켲�귥�ƘG1�C<э��L�����1����)���ۧSƙ3�b���N��ߟ����-/V�L]e�%> endobj 10 0 obj <> stream x�e��N1��<�Kh���n����! H�Լ>�H�-M�U�ˌ�;��Oq��O�kxzUP_b�9���7q��v���뵵�%�p v/��"E���i̔4c{��:� r�+���L�:� �{�DHh&h&#�5�d�E����Z�R�9+4k�Ɋ�U�Y1���4�V7���mp�ඹ�5���Nf����n͹����n�������i���&��C��"&z�����4����Dw^ �pWGy��=͔'�<��O:+&V��|f�I3{b���.���� y��4����w�v%]ݟ��nܖF�ΛߖF�Ɖ'ּs��Ÿ-�w��V�sFQ>�b45�|йO����}4������������e�-S׶���Gj���������~� endstream endobj 1 0 obj <> endobj 11 0 obj <> endobj 2 0 obj << /ProcSet [/PDF /Text /ImageB /ImageC /ImageI] /Font << /F1 11 0 R >> /XObject << >> >> endobj 12 0 obj << /Producer (FPDF 1.6) /Creationdate (D:20150326120906) >> endobj 13 0 obj << /Type /Catalog /Pages 1 0 R /Openaction [3 0 R /Fith null] /Pagelayout /Onecolumn >> endobj xref 0 14 0000000000 65535 f 0000002164 00000 n 0000002371 00000 n 00000000000009 00000 n 0000000087 00000 n 0000000542 00000 n 0000000620 00000 n 0000001077 00000 n 0000001155 00000 n 0000001619 00000 n 0000001698 00000 n 0000002269 00000 n 0000002476 00000 n 0000002552 00000 n trailer << /Size 14 /Root 13 0 R /Info 12 0 R >> startxref 2656 %EOF

Answer 2

What would this eFPDF be ?

An example would be like this

public function gerarPdf() {       
      $fpdf = new Fpdf();
             $fpdf->AddPage();
             $fpdf->SetFont('Arial','B',16);
             $fpdf->Output();
             exit;
}