Send Form Data as PDF attachment through Sendgrid - php

Question

I want to submit a form's data as a PDF attachment through Sendgrid.
The flow is as it follows:
A customer fills a form on a webpage.
Press a submit button.
A PDF is generated through FDPF.
An email is sent to me, through SendGrid, with some text and the generated PDF as an attachment.
Here is some of the code:
<?php
if(isset($_POST['sendemail']))
{
require('fpdf/fpdf.php');
$title = 'Inscrição';
$name = $_POST['name'];
$email_id = $_POST['email'];
$age = $_POST['age'];
$aulas = $_POST['aulas'];
$experience = $_POST['experiencia-dança'];
$conhecimento = $_POST['conhecimento'];
$comentario = $_POST['comentario'];
(...)
$pdf = new FPDF();
$pdf -> AddPage();
$pdf->SetTitle($title);
(...)
$pdf->Output();
(...)
$sendgrid = new \SendGrid($API_KEY);
$email = new \SendGrid\Mail\Mail();
$email->setFrom("********#gmail.com", "***** SAMA");
$email->setSubject("Email de teste");
$email->addTo("*****#gmail.com", "****SAMA");
$email->addContent("text/plain", $comentario);
If($sendgrid->send($email));
{
$msg = "Obrigado pelo seu contacto!";
}
With this code, I can send the email, but no attachment is coming.
The problem is when I add the following lines of code, the email stop being sent to my inbox:
$attachment = $pdf;
$file_encoded = base64_encode(file_get_contents($attachment));
$email->addAttachment(
$file_encoded,
"application/text",
"test.pdf",
"attachment"
);
Can somebody please help me with this?
Best regards

Answer 1

Resolved the problem with this lines of code:
$pdfdoc = $pdf->Output("pdf.pdf", "S");
$att1 = new \SendGrid\Mail\Attachment();
$att1->setContent($pdfdoc);
$att1->setType("application/octet-stream");
$att1->setFilename(basename("pdf.pdf"));
$att1->setDisposition("attachment");
$email->addAttachment($att1);