title: Create a zip file using PHP class ZipArchive without writing the file to disk?
body: <p>I would like to create a zip file in memory using a ZipArchive (or a native PHP class) and read the content of the file back to the client.  Is this possible?  If so, how?</p>
  
  <p>The files that I want to zip in this application are a maximum of 15 MB total.  I think we should be in good shape memory-wise. </p>