title: date() returning an empty string
body: <p>I am using PHP's <code>date</code> function. The statement is as simple as</p>
  
  <pre><code>$t= 1339455660;
  echo date('l, d F Y H:i:s', $t); // not working
  </code></pre>
  
  <p>For some reason the above function returns an empty string:</p>
  
  <pre><code>" "
  </code></pre>
  
  <p>What could be the reason?</p>
  
  <p><strong>EDIT:</strong></p>
  
  <pre><code>$t= 1339455660;
  echo date('l, d F Y H:i:s'); // works returns desired result
  echo date('l, d F Y H:i:s', $t); // returns " " #wierd
  </code></pre>