title: $_POST key name length?
body: <p>I am experiencing a very odd behaviour. Say I have the following two <code>&lt;input type='image'&gt;</code> (with the <code>src</code> attribute equal to the <code>name</code> attribute):</p>
  
  <pre><code>&lt;input type='image' name='http://farm1.static.flickr.com/224/471627793_fbda6cecbe_s.jpg'&gt;
  &lt;input type='image' name='http://farm5.static.flickr.com/4053/4501238330_c5a85162ef_s.jpg'&gt;
  </code></pre>
  
  <p>My question is: why does the first input submit and the second one doesn't? I am using CakePHP and if I click on the second image, the <code>$this-&gt;params['form']</code> is empty. But when I click on the first image, everything works fine: the <code>$this-&gt;params['form']</code> contains the correct image name together with it's coordinates from where it was clicked.</p>
  
  <p>This is a very odd behaviour and I believe that this can only happen if <code>$_POST</code> limit its keys' length.</p>
  
  <p>Any help is highly appreciated! Thank you!</p>