title: How to use the CSV MIME-type?
body: <p>In a web application I am working on, the user can click on a link to a CSV file.  There is no header set for the mime-type, so the browser just renders it as text.  I would like for this file to be sent as a .csv file, so the user can directly open it with calc, excel, gnumeric, etc.  </p>
  
  <pre><code>header('Content-Type: text/csv');
  echo "cell 1, cell 2";
  </code></pre>
  
  <p>This code works as expected on my computer (Isn't that how it always is?) but does not work on another computer.</p>
  
  <p>My browser is a nightly build of FF 3.0.1 (on linux).  The browsers it did not work in were IE 7 and FF 3.0 (on windows)</p>
  
  <p>Are there any quirks I am unaware of?</p>