title: How to convert string like md5 hash into a raw binary string?
body: <blockquote>
    <p><strong>Possible Duplicate:</strong><br>
    <a href="https://stackoverflow.com/questions/2602802/how-to-convert-hexadecimal-representation-of-data-to-binary-data-in-php">How to convert hexadecimal representation of data to binary data in PHP?</a>  </p>
  </blockquote>
  
  
  
  <p>How to convert md5 hash string based representation into its raw binary format?</p>
  
  <p>Please note that <code>md5($data,true)</code> is not an option as I don't have access to <code>$data</code> but only md5 hash of it in the string format.</p>