Senden Sie Formular-Datei-Anhang mit Hilfe von PHP und Sendgrid-APIs

Unten ist ein Skript zu senden E-Mails über php sendmail mit phpmailer. Ich möchte eine E-Mail senden mithilfe von Sendgrid-API, welche änderungen muss ich machen, um es Arbeit mit Sendgrid?

<?php

require('PHPMailer/class.phpmailer.php');

if(isset($_POST['email'])) {
    $name = $_POST['name']; //required
    $position = $_POST['position']; //required
    $email_from = $_POST['email']; //required
    $phone = $_POST['phone']; //not required
    $comments = $_POST['comments']; //required

    $email_to = "[email protected]";
    $name_to = "careers";
    $email_subject = "Job Application from ".$name." for ".$position;

  if($position != null)
    function clean_string($string) {
      $bad = array("content-type","bcc:","to:","cc:","href");
      return str_replace($bad,"",$string);
    }
     $email_message = "";
    $email_message .= "Name: ".clean_string($name)."\n";
    $email_message .= "Position: ".clean_string($position)."\n";
    $email_message .= "Email: ".clean_string($email_from)."\n";
    $email_message .= "Phone: ".clean_string($phone)."\n";
    $email_message .= "Comments: ".clean_string($comments)."\n";

    $allowedExts = array("doc", "docx", "xls", "xlsx", "pdf");
$temp = explode(".", $_FILES["file"]["name"]);
$extension = end($temp);
if ((($_FILES["file"]["type"] == "application/pdf")
|| ($_FILES["file"]["type"] == "application/msword")
|| ($_FILES["file"]["type"] == "application/excel")
|| ($_FILES["file"]["type"] == "application/vnd.ms-excel")
|| ($_FILES["file"]["type"] == "application/x-excel")
|| ($_FILES["file"]["type"] == "application/x-msexcel")
|| ($_FILES["file"]["type"] == "application/vnd.openxmlformats-officedocument.wordprocessingml.document")
|| ($_FILES["file"]["type"] == "application/vnd.openxmlformats-officedocument.spreadsheetml.sheet"))

&& in_array($extension, $allowedExts))
  {
  if ($_FILES["file"]["error"] > 0)
    {
    echo "<script>alert('Error: " . $_FILES["file"]["error"] ."')</script>";
    }
  else
    {
        $d='upload/';
        $de=$d . basename($_FILES['file']['name']);
    move_uploaded_file($_FILES["file"]["tmp_name"], $de);
$fileName = $_FILES['file']['name'];
    $filePath = $_FILES['file']['tmp_name'];
     //add only if the file is an upload
     }
  }
else
  {
  echo "<script>alert('Invalid file')</script>";
  }

//create email headers
$headers = 'From: '.$email_from."\r\n".
'Reply-To: '.$email_from."\r\n" .
'X-Mailer: PHP/' . phpversion();
//Create a new PHPMailer instance
$mail = new PHPMailer();
//Set who the message is to be sent from
$mail->SetFrom($email_from, $name);
//Set an alternative reply-to address
$mail->addReplyTo($email_from, $name);
//Set who the message is to be sent to
$mail->addAddress($email_to, $name_to);
//Set the subject line
$mail->Subject = $email_subject;
//Read an HTML message body from an external file, convert referenced images to embedded, convert HTML into a basic plain-text alternative body
$mail->MsgHTML($email_message);
//Replace the plain text body with one created manually
$mail->AltBody = $email_message;
//Attach an image file
$mail->AddAttachment($_FILES['file']['tmp_name'], $_FILES['file']['name']);
//Send the message, check for errors
if(!$mail->Send()) {
  echo "<script>alert('Mailer Error: " . $mail->ErrorInfo."')</script>";
} else {
  echo "<script>alert('Your request has been submitted. We will contact you soon.')</script>";
}
}
?>