title: Help me translate long value, expressed in hex, back in to a date/time
body: <p>I have a date value, which I'm told is 8 bytes, a single "long" (aka int64) value, and converted to hex:</p>
  
  <pre><code>60f347d15798c901
  </code></pre>
  
  <p>How can I convert this and values like this, using PHP, into a time/date?  </p>
  
  <p>Converting it to decimal gives me:
  96 243 71 209 87 152 201 1</p>
  
  <p>A little more info: the original value is a C# DateTime, and should represent a time/date about 2 or 3 weeks ago.</p>