title: PHP: open a file download dialog
body: <p>I have an MPEG file (.mpg) hosted in Amazon S3, that I want to link to a page I have, so the user will be able to download it from the page. 
  I have in my page a link:
  <a href="http://muamazonbucket.aws.com/mufile.mpg" rel="nofollow noreferrer">bla bla</a>"</p>
  
  <p>The link to the file works when I right-click it and choose "Save Target As" , but I would like it to work also when I left click it, and that it will open a file download dialog. right now, a left click will direct to a page that has the video directly played in it (in FireFox) or just won't load (in Internet Explorer). </p>
  
  <p>I am working in PHP, why does this happen?</p>