SMTP Error: Could not authenticate

Question

Can't send an email. Not sure what is going wrong and haven't found an answer through google yet.

$mail = new PHPMailer();
        $mail->IsSMTP();
        $mail->SMTPAuth     = true;
        $mail->SMTPSecure   = "tls";
        $mail->Host         = "smtp.gmail.com";
        $mail->Port         = 587;
        $mail->Username     = "myemail@gmail.com";
        $mail->Password     = "mypassword";
        $mail->setFrom("myemail@gmail.com");
        $mail->AddAddress("myemail@gmail.com"); // sending an email to myself to check that it works.
        $mail->Subject      = "Password change for pset7";
        $mail->Body         = "Hello. Here's a link: pset7/password_mail.php?token=a";
        if(!$mail->send())
        {
            apologize("Something went wrong with sending the link");
        }
        else
        {
            redirect("index.php");
        }

Edit: Just leaving this here incase someone else has a similar problem with gmail.

On an account that didn't have 2 step authentication I had to enable access for less secure apps before I was able to send mail with phpmailer. You can also debug phpmailer by setting SMTPDebug to 2 or higher. Something like:

$mail->SMTPDebug = 2;

Answer 1

If you are using two step authentication for your Gmail account, you have to create a one time password and use this one, as you can't use the two step authentication with phpmailer.

Answer 2

I used single quotes and it works for me. Use single quotes for everything except email, password, body, and subject.