title: What RFC defines arrays transmitted over HTTP?
body: <p>What RFC defines the passing arrays over HTTP?  Most web application platforms allow you to supply an array of arguments over GET or POST.  The following URL is an example:</p>
  
  <pre><code>http://localhost/?var[1]=one&amp;var[2]=two&amp;var[3]=three
  </code></pre>
  
  <p><a href="http://www.ietf.org/rfc/rfc1738.txt" rel="noreferrer">RFC1738</a> defines URLs,  however the bracket is missing from the Backus–Naur Form(BNF) definition of the URL.  Also this RFC doesn't cover POST.  Ideally I would like to get the BNF for this feature as defined in the RFC.</p>