title: php://input - what does it do in fopen()?
body: <pre><code>$handle = fopen("/home/rasmus/file.txt", "r");
  $handle = fopen("/home/rasmus/file.gif", "wb");
  </code></pre>
  
  <p>I can understand this that <code>/home/rasmus/file.txt</code> and <code>/home/rasmus/file.gif</code> are the file path.</p>
  
  <p>But what these mean:</p>
  
  <pre><code>php://input
  php://temp
  </code></pre>
  
  <p>in </p>
  
  <pre><code>$objInputStream = fopen("php://input", "r");
  $objTempStream = fopen("php://temp", "w+b");
  </code></pre>
  
  <p>What do they do?</p>