A handy PHP method for turning a string into hex.
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<pre>
function strhex($string)
{
   $hex="";
   for ($i=0;$i&lt;strlen($string);$i++)
	   $hex.=(strlen(dechex(ord($string[$i])))&lt;2)? "0".dechex(ord($string[$i])): dechex(ord($string[$i]));
   return $hex;
}
</pre>