How to attach uploaded photo via dropzone to send via PHPMailer?

Question

PHP

I can take js src of the photo I loaded var imgName = $('.dz-image img').attr('src');
but it's cut to size and I can't attach it to the form in order to send it via PHPMailer as an attachment, how can I do that? 
If you don't use dropzone, just upload a photo via input file, and attach it like this 
$mail->addAttachment($_FILES['upload']['tmp_name'], $_FILES['upload']['name']); then everything works, but I need it through dropzone, how can I do this?

Answer 1

The question is rather chaotic, but I'll try to use telepathy and guess how it should sound:
"I don't understand where the file transferred by the dropzone was saved"
You must have copied the server part from somewhere. see what's inside.
If you don't understand, show the code.